256909380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{223}}^1$

素因数の和:466

約数の個数: 192

約数和(自身を含む): 893534208

約数和(自身を除く): 636624828

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 60, 65, 70, 78, 84, 91, 105, 130, 140, 156, 182, 195, 210, 211, 223, 260, 273, 364, 390, 420, 422, 446, 455, 546, 633, 669, 780, 844, 892, 910, 1055, 1092, 1115, 1266, 1338, 1365, 1477, 1561, 1820, 2110, 2230, 2532, 2676, 2730, 2743, 2899, 2954, 3122, 3165, 3345, 4220, 4431, 4460, 4683, 5460, 5486, 5798, 5908, 6244, 6330, 6690, 7385, 7805, 8229, 8697, 8862, 9366, 10972, 11596, 12660, 13380, 13715, 14495, 14770, 15610, 16458, 17394, 17724, 18732, 19201, 20293, 22155, 23415, 27430, 28990, 29540, 31220, 32916, 34788, 38402, 40586, 41145, 43485, 44310, 46830, 47053, 54860, 57603, 57980, 60879, 76804, 81172, 82290, 86970, 88620, 93660, 94106, 96005, 101465, 115206, 121758, 141159, 164580, 173940, 188212, 192010, 202930, 230412, 235265, 243516, 282318, 288015, 304395, 329371, 384020, 405860, 470530, 564636, 576030, 608790, 611689, 658742, 705795, 941060, 988113, 1152060, 1217580, 1223378, 1317484, 1411590, 1646855, 1835067, 1976226, 2446756, 2823180, 3058445, 3293710, 3670134, 3952452, 4281823, 4940565, 6116890, 6587420, 7340268, 8563646, 9175335, 9881130, 12233780, 12845469, 17127292, 18350670, 19762260, 21409115, 25690938, 36701340, 42818230, 51381876, 64227345, 85636460, 128454690, 256909380]

約数ペア:

[(1, 256909380), (2, 128454690), (3, 85636460), (4, 64227345), (5, 51381876), (6, 42818230), (7, 36701340), (10, 25690938), (12, 21409115), (13, 19762260), (14, 18350670), (15, 17127292), (20, 12845469), (21, 12233780), (26, 9881130), (28, 9175335), (30, 8563646), (35, 7340268), (39, 6587420), (42, 6116890), (52, 4940565), (60, 4281823), (65, 3952452), (70, 3670134), (78, 3293710), (84, 3058445), (91, 2823180), (105, 2446756), (130, 1976226), (140, 1835067), (156, 1646855), (182, 1411590), (195, 1317484), (210, 1223378), (211, 1217580), (223, 1152060), (260, 988113), (273, 941060), (364, 705795), (390, 658742), (420, 611689), (422, 608790), (446, 576030), (455, 564636), (546, 470530), (633, 405860), (669, 384020), (780, 329371), (844, 304395), (892, 288015), (910, 282318), (1055, 243516), (1092, 235265), (1115, 230412), (1266, 202930), (1338, 192010), (1365, 188212), (1477, 173940), (1561, 164580), (1820, 141159), (2110, 121758), (2230, 115206), (2532, 101465), (2676, 96005), (2730, 94106), (2743, 93660), (2899, 88620), (2954, 86970), (3122, 82290), (3165, 81172), (3345, 76804), (4220, 60879), (4431, 57980), (4460, 57603), (4683, 54860), (5460, 47053), (5486, 46830), (5798, 44310), (5908, 43485), (6244, 41145), (6330, 40586), (6690, 38402), (7385, 34788), (7805, 32916), (8229, 31220), (8697, 29540), (8862, 28990), (9366, 27430), (10972, 23415), (11596, 22155), (12660, 20293), (13380, 19201), (13715, 18732), (14495, 17724), (14770, 17394), (15610, 16458)]