128724640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:207

約数の個数: 144

約数和(自身を含む): 342868680

約数和(自身を除く): 214144040

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 61, 80, 88, 109, 110, 121, 122, 160, 176, 218, 220, 242, 244, 305, 352, 436, 440, 484, 488, 545, 605, 610, 671, 872, 880, 968, 976, 1090, 1199, 1210, 1220, 1342, 1744, 1760, 1936, 1952, 2180, 2398, 2420, 2440, 2684, 3355, 3488, 3872, 4360, 4796, 4840, 4880, 5368, 5995, 6649, 6710, 7381, 8720, 9592, 9680, 9760, 10736, 11990, 13189, 13298, 13420, 14762, 17440, 19184, 19360, 21472, 23980, 26378, 26596, 26840, 29524, 33245, 36905, 38368, 47960, 52756, 53192, 53680, 59048, 65945, 66490, 73139, 73810, 95920, 105512, 106384, 107360, 118096, 131890, 132980, 146278, 147620, 191840, 211024, 212768, 236192, 263780, 265960, 292556, 295240, 365695, 422048, 527560, 531920, 585112, 590480, 731390, 804529, 1055120, 1063840, 1170224, 1180960, 1462780, 1609058, 2110240, 2340448, 2925560, 3218116, 4022645, 5851120, 6436232, 8045290, 11702240, 12872464, 16090580, 25744928, 32181160, 64362320, 128724640]

約数ペア:

[(1, 128724640), (2, 64362320), (4, 32181160), (5, 25744928), (8, 16090580), (10, 12872464), (11, 11702240), (16, 8045290), (20, 6436232), (22, 5851120), (32, 4022645), (40, 3218116), (44, 2925560), (55, 2340448), (61, 2110240), (80, 1609058), (88, 1462780), (109, 1180960), (110, 1170224), (121, 1063840), (122, 1055120), (160, 804529), (176, 731390), (218, 590480), (220, 585112), (242, 531920), (244, 527560), (305, 422048), (352, 365695), (436, 295240), (440, 292556), (484, 265960), (488, 263780), (545, 236192), (605, 212768), (610, 211024), (671, 191840), (872, 147620), (880, 146278), (968, 132980), (976, 131890), (1090, 118096), (1199, 107360), (1210, 106384), (1220, 105512), (1342, 95920), (1744, 73810), (1760, 73139), (1936, 66490), (1952, 65945), (2180, 59048), (2398, 53680), (2420, 53192), (2440, 52756), (2684, 47960), (3355, 38368), (3488, 36905), (3872, 33245), (4360, 29524), (4796, 26840), (4840, 26596), (4880, 26378), (5368, 23980), (5995, 21472), (6649, 19360), (6710, 19184), (7381, 17440), (8720, 14762), (9592, 13420), (9680, 13298), (9760, 13189), (10736, 11990)]