51721020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2$

素因数の和:113

約数の個数: 216

約数和(自身を含む): 182171808

約数和(自身を除く): 130450788

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 23, 26, 30, 31, 36, 39, 45, 46, 52, 60, 62, 65, 69, 78, 90, 92, 93, 115, 117, 124, 130, 138, 155, 156, 180, 186, 195, 207, 230, 234, 260, 276, 279, 299, 310, 345, 372, 390, 403, 414, 460, 465, 468, 558, 585, 598, 620, 690, 713, 780, 806, 828, 897, 930, 961, 1035, 1116, 1170, 1196, 1209, 1380, 1395, 1426, 1495, 1612, 1794, 1860, 1922, 2015, 2070, 2139, 2340, 2418, 2691, 2790, 2852, 2883, 2990, 3565, 3588, 3627, 3844, 4030, 4140, 4278, 4485, 4805, 4836, 5382, 5580, 5766, 5980, 6045, 6417, 7130, 7254, 8060, 8556, 8649, 8970, 9269, 9610, 10695, 10764, 11532, 12090, 12493, 12834, 13455, 14260, 14415, 14508, 17298, 17940, 18135, 18538, 19220, 21390, 22103, 24180, 24986, 25668, 26910, 27807, 28830, 32085, 34596, 36270, 37076, 37479, 42780, 43245, 44206, 46345, 49972, 53820, 55614, 57660, 62465, 64170, 66309, 72540, 74958, 83421, 86490, 88412, 92690, 110515, 111228, 112437, 124930, 128340, 132618, 139035, 149916, 166842, 172980, 185380, 187395, 198927, 221030, 224874, 249860, 265236, 278070, 287339, 331545, 333684, 374790, 397854, 417105, 442060, 449748, 556140, 562185, 574678, 663090, 749580, 795708, 834210, 862017, 994635, 1124370, 1149356, 1326180, 1436695, 1668420, 1724034, 1989270, 2248740, 2586051, 2873390, 3448068, 3978540, 4310085, 5172102, 5746780, 8620170, 10344204, 12930255, 17240340, 25860510, 51721020]

約数ペア:

[(1, 51721020), (2, 25860510), (3, 17240340), (4, 12930255), (5, 10344204), (6, 8620170), (9, 5746780), (10, 5172102), (12, 4310085), (13, 3978540), (15, 3448068), (18, 2873390), (20, 2586051), (23, 2248740), (26, 1989270), (30, 1724034), (31, 1668420), (36, 1436695), (39, 1326180), (45, 1149356), (46, 1124370), (52, 994635), (60, 862017), (62, 834210), (65, 795708), (69, 749580), (78, 663090), (90, 574678), (92, 562185), (93, 556140), (115, 449748), (117, 442060), (124, 417105), (130, 397854), (138, 374790), (155, 333684), (156, 331545), (180, 287339), (186, 278070), (195, 265236), (207, 249860), (230, 224874), (234, 221030), (260, 198927), (276, 187395), (279, 185380), (299, 172980), (310, 166842), (345, 149916), (372, 139035), (390, 132618), (403, 128340), (414, 124930), (460, 112437), (465, 111228), (468, 110515), (558, 92690), (585, 88412), (598, 86490), (620, 83421), (690, 74958), (713, 72540), (780, 66309), (806, 64170), (828, 62465), (897, 57660), (930, 55614), (961, 53820), (1035, 49972), (1116, 46345), (1170, 44206), (1196, 43245), (1209, 42780), (1380, 37479), (1395, 37076), (1426, 36270), (1495, 34596), (1612, 32085), (1794, 28830), (1860, 27807), (1922, 26910), (2015, 25668), (2070, 24986), (2139, 24180), (2340, 22103), (2418, 21390), (2691, 19220), (2790, 18538), (2852, 18135), (2883, 17940), (2990, 17298), (3565, 14508), (3588, 14415), (3627, 14260), (3844, 13455), (4030, 12834), (4140, 12493), (4278, 12090), (4485, 11532), (4805, 10764), (4836, 10695), (5382, 9610), (5580, 9269), (5766, 8970), (5980, 8649), (6045, 8556), (6417, 8060), (7130, 7254)]