81515100

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:220

約数の個数: 144

約数和(自身を含む): 247484160

約数和(自身を除く): 165969060

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 43, 50, 60, 71, 75, 86, 89, 100, 129, 142, 150, 172, 178, 213, 215, 258, 267, 284, 300, 355, 356, 426, 430, 445, 516, 534, 645, 710, 852, 860, 890, 1065, 1068, 1075, 1290, 1335, 1420, 1775, 1780, 2130, 2150, 2225, 2580, 2670, 3053, 3225, 3550, 3827, 4260, 4300, 4450, 5325, 5340, 6106, 6319, 6450, 6675, 7100, 7654, 8900, 9159, 10650, 11481, 12212, 12638, 12900, 13350, 15265, 15308, 18318, 18957, 19135, 21300, 22962, 25276, 26700, 30530, 31595, 36636, 37914, 38270, 45795, 45924, 57405, 61060, 63190, 75828, 76325, 76540, 91590, 94785, 95675, 114810, 126380, 152650, 157975, 183180, 189570, 191350, 228975, 229620, 271717, 287025, 305300, 315950, 379140, 382700, 457950, 473925, 543434, 574050, 631900, 815151, 915900, 947850, 1086868, 1148100, 1358585, 1630302, 1895700, 2717170, 3260604, 4075755, 5434340, 6792925, 8151510, 13585850, 16303020, 20378775, 27171700, 40757550, 81515100]

約数ペア:

[(1, 81515100), (2, 40757550), (3, 27171700), (4, 20378775), (5, 16303020), (6, 13585850), (10, 8151510), (12, 6792925), (15, 5434340), (20, 4075755), (25, 3260604), (30, 2717170), (43, 1895700), (50, 1630302), (60, 1358585), (71, 1148100), (75, 1086868), (86, 947850), (89, 915900), (100, 815151), (129, 631900), (142, 574050), (150, 543434), (172, 473925), (178, 457950), (213, 382700), (215, 379140), (258, 315950), (267, 305300), (284, 287025), (300, 271717), (355, 229620), (356, 228975), (426, 191350), (430, 189570), (445, 183180), (516, 157975), (534, 152650), (645, 126380), (710, 114810), (852, 95675), (860, 94785), (890, 91590), (1065, 76540), (1068, 76325), (1075, 75828), (1290, 63190), (1335, 61060), (1420, 57405), (1775, 45924), (1780, 45795), (2130, 38270), (2150, 37914), (2225, 36636), (2580, 31595), (2670, 30530), (3053, 26700), (3225, 25276), (3550, 22962), (3827, 21300), (4260, 19135), (4300, 18957), (4450, 18318), (5325, 15308), (5340, 15265), (6106, 13350), (6319, 12900), (6450, 12638), (6675, 12212), (7100, 11481), (7654, 10650), (8900, 9159)]