123141920

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:155

約数の個数: 192

約数和(自身を含む): 341978112

約数和(自身を除く): 218836192

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 37, 40, 44, 55, 61, 62, 74, 80, 88, 110, 122, 124, 148, 155, 160, 176, 185, 220, 244, 248, 296, 305, 310, 341, 352, 370, 407, 440, 488, 496, 592, 610, 620, 671, 682, 740, 814, 880, 976, 992, 1147, 1184, 1220, 1240, 1342, 1364, 1480, 1628, 1705, 1760, 1891, 1952, 2035, 2257, 2294, 2440, 2480, 2684, 2728, 2960, 3256, 3355, 3410, 3782, 4070, 4514, 4588, 4880, 4960, 5368, 5456, 5735, 5920, 6512, 6710, 6820, 7564, 8140, 9028, 9176, 9455, 9760, 10736, 10912, 11285, 11470, 12617, 13024, 13420, 13640, 15128, 16280, 18056, 18352, 18910, 20801, 21472, 22570, 22940, 24827, 25234, 26840, 27280, 30256, 32560, 36112, 36704, 37820, 41602, 45140, 45880, 49654, 50468, 53680, 54560, 60512, 63085, 65120, 69967, 72224, 75640, 83204, 90280, 91760, 99308, 100936, 104005, 107360, 124135, 126170, 139934, 151280, 166408, 180560, 183520, 198616, 201872, 208010, 248270, 252340, 279868, 302560, 332816, 349835, 361120, 397232, 403744, 416020, 496540, 504680, 559736, 665632, 699670, 769637, 794464, 832040, 993080, 1009360, 1119472, 1399340, 1539274, 1664080, 1986160, 2018720, 2238944, 2798680, 3078548, 3328160, 3848185, 3972320, 5597360, 6157096, 7696370, 11194720, 12314192, 15392740, 24628384, 30785480, 61570960, 123141920]

約数ペア:

[(1, 123141920), (2, 61570960), (4, 30785480), (5, 24628384), (8, 15392740), (10, 12314192), (11, 11194720), (16, 7696370), (20, 6157096), (22, 5597360), (31, 3972320), (32, 3848185), (37, 3328160), (40, 3078548), (44, 2798680), (55, 2238944), (61, 2018720), (62, 1986160), (74, 1664080), (80, 1539274), (88, 1399340), (110, 1119472), (122, 1009360), (124, 993080), (148, 832040), (155, 794464), (160, 769637), (176, 699670), (185, 665632), (220, 559736), (244, 504680), (248, 496540), (296, 416020), (305, 403744), (310, 397232), (341, 361120), (352, 349835), (370, 332816), (407, 302560), (440, 279868), (488, 252340), (496, 248270), (592, 208010), (610, 201872), (620, 198616), (671, 183520), (682, 180560), (740, 166408), (814, 151280), (880, 139934), (976, 126170), (992, 124135), (1147, 107360), (1184, 104005), (1220, 100936), (1240, 99308), (1342, 91760), (1364, 90280), (1480, 83204), (1628, 75640), (1705, 72224), (1760, 69967), (1891, 65120), (1952, 63085), (2035, 60512), (2257, 54560), (2294, 53680), (2440, 50468), (2480, 49654), (2684, 45880), (2728, 45140), (2960, 41602), (3256, 37820), (3355, 36704), (3410, 36112), (3782, 32560), (4070, 30256), (4514, 27280), (4588, 26840), (4880, 25234), (4960, 24827), (5368, 22940), (5456, 22570), (5735, 21472), (5920, 20801), (6512, 18910), (6710, 18352), (6820, 18056), (7564, 16280), (8140, 15128), (9028, 13640), (9176, 13420), (9455, 13024), (9760, 12617), (10736, 11470), (10912, 11285)]