21043620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2$

素因数の和:91

約数の個数: 216

約数和(自身を含む): 76088376

約数和(自身を除く): 55044756

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 17, 18, 20, 23, 26, 30, 34, 36, 39, 45, 46, 51, 52, 60, 65, 68, 69, 78, 85, 90, 92, 102, 115, 117, 130, 138, 153, 156, 170, 180, 195, 204, 207, 221, 230, 234, 255, 260, 276, 299, 306, 340, 345, 390, 391, 414, 442, 460, 468, 510, 529, 585, 598, 612, 663, 690, 765, 780, 782, 828, 884, 897, 1020, 1035, 1058, 1105, 1170, 1173, 1196, 1326, 1380, 1495, 1530, 1564, 1587, 1794, 1955, 1989, 2070, 2116, 2210, 2340, 2346, 2645, 2652, 2691, 2990, 3060, 3174, 3315, 3519, 3588, 3910, 3978, 4140, 4420, 4485, 4692, 4761, 5083, 5290, 5382, 5865, 5980, 6348, 6630, 6877, 7038, 7820, 7935, 7956, 8970, 8993, 9522, 9945, 10166, 10580, 10764, 11730, 13260, 13455, 13754, 14076, 15249, 15870, 17595, 17940, 17986, 19044, 19890, 20332, 20631, 23460, 23805, 25415, 26910, 26979, 27508, 30498, 31740, 34385, 35190, 35972, 39780, 41262, 44965, 45747, 47610, 50830, 53820, 53958, 60996, 61893, 68770, 70380, 76245, 80937, 82524, 89930, 91494, 95220, 101660, 103155, 107916, 116909, 123786, 134895, 137540, 152490, 161874, 179860, 182988, 206310, 228735, 233818, 247572, 269790, 304980, 309465, 323748, 350727, 404685, 412620, 457470, 467636, 539580, 584545, 618930, 701454, 809370, 914940, 1052181, 1169090, 1237860, 1402908, 1618740, 1753635, 2104362, 2338180, 3507270, 4208724, 5260905, 7014540, 10521810, 21043620]

約数ペア:

[(1, 21043620), (2, 10521810), (3, 7014540), (4, 5260905), (5, 4208724), (6, 3507270), (9, 2338180), (10, 2104362), (12, 1753635), (13, 1618740), (15, 1402908), (17, 1237860), (18, 1169090), (20, 1052181), (23, 914940), (26, 809370), (30, 701454), (34, 618930), (36, 584545), (39, 539580), (45, 467636), (46, 457470), (51, 412620), (52, 404685), (60, 350727), (65, 323748), (68, 309465), (69, 304980), (78, 269790), (85, 247572), (90, 233818), (92, 228735), (102, 206310), (115, 182988), (117, 179860), (130, 161874), (138, 152490), (153, 137540), (156, 134895), (170, 123786), (180, 116909), (195, 107916), (204, 103155), (207, 101660), (221, 95220), (230, 91494), (234, 89930), (255, 82524), (260, 80937), (276, 76245), (299, 70380), (306, 68770), (340, 61893), (345, 60996), (390, 53958), (391, 53820), (414, 50830), (442, 47610), (460, 45747), (468, 44965), (510, 41262), (529, 39780), (585, 35972), (598, 35190), (612, 34385), (663, 31740), (690, 30498), (765, 27508), (780, 26979), (782, 26910), (828, 25415), (884, 23805), (897, 23460), (1020, 20631), (1035, 20332), (1058, 19890), (1105, 19044), (1170, 17986), (1173, 17940), (1196, 17595), (1326, 15870), (1380, 15249), (1495, 14076), (1530, 13754), (1564, 13455), (1587, 13260), (1794, 11730), (1955, 10764), (1989, 10580), (2070, 10166), (2116, 9945), (2210, 9522), (2340, 8993), (2346, 8970), (2645, 7956), (2652, 7935), (2691, 7820), (2990, 7038), (3060, 6877), (3174, 6630), (3315, 6348), (3519, 5980), (3588, 5865), (3910, 5382), (3978, 5290), (4140, 5083), (4420, 4761), (4485, 4692)]