128575980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2389}}^1$

素因数の和:2440

約数の個数: 144

約数和(自身を含む): 438459840

約数和(自身を除く): 309883860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 23, 26, 30, 36, 39, 45, 46, 52, 60, 65, 69, 78, 90, 92, 115, 117, 130, 138, 156, 180, 195, 207, 230, 234, 260, 276, 299, 345, 390, 414, 460, 468, 585, 598, 690, 780, 828, 897, 1035, 1170, 1196, 1380, 1495, 1794, 2070, 2340, 2389, 2691, 2990, 3588, 4140, 4485, 4778, 5382, 5980, 7167, 8970, 9556, 10764, 11945, 13455, 14334, 17940, 21501, 23890, 26910, 28668, 31057, 35835, 43002, 47780, 53820, 54947, 62114, 71670, 86004, 93171, 107505, 109894, 124228, 143340, 155285, 164841, 186342, 215010, 219788, 274735, 279513, 310570, 329682, 372684, 430020, 465855, 494523, 549470, 559026, 621140, 659364, 714311, 824205, 931710, 989046, 1098940, 1118052, 1397565, 1428622, 1648410, 1863420, 1978092, 2142933, 2472615, 2795130, 2857244, 3296820, 3571555, 4285866, 4945230, 5590260, 6428799, 7143110, 8571732, 9890460, 10714665, 12857598, 14286220, 21429330, 25715196, 32143995, 42858660, 64287990, 128575980]

約数ペア:

[(1, 128575980), (2, 64287990), (3, 42858660), (4, 32143995), (5, 25715196), (6, 21429330), (9, 14286220), (10, 12857598), (12, 10714665), (13, 9890460), (15, 8571732), (18, 7143110), (20, 6428799), (23, 5590260), (26, 4945230), (30, 4285866), (36, 3571555), (39, 3296820), (45, 2857244), (46, 2795130), (52, 2472615), (60, 2142933), (65, 1978092), (69, 1863420), (78, 1648410), (90, 1428622), (92, 1397565), (115, 1118052), (117, 1098940), (130, 989046), (138, 931710), (156, 824205), (180, 714311), (195, 659364), (207, 621140), (230, 559026), (234, 549470), (260, 494523), (276, 465855), (299, 430020), (345, 372684), (390, 329682), (414, 310570), (460, 279513), (468, 274735), (585, 219788), (598, 215010), (690, 186342), (780, 164841), (828, 155285), (897, 143340), (1035, 124228), (1170, 109894), (1196, 107505), (1380, 93171), (1495, 86004), (1794, 71670), (2070, 62114), (2340, 54947), (2389, 53820), (2691, 47780), (2990, 43002), (3588, 35835), (4140, 31057), (4485, 28668), (4778, 26910), (5382, 23890), (5980, 21501), (7167, 17940), (8970, 14334), (9556, 13455), (10764, 11945)]