7961940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:182

約数の個数: 144

約数和(自身を含む): 28304640

約数和(自身を除く): 20342700

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 71, 84, 89, 90, 105, 126, 140, 142, 178, 180, 210, 213, 252, 267, 284, 315, 355, 356, 420, 426, 445, 497, 534, 623, 630, 639, 710, 801, 852, 890, 994, 1065, 1068, 1246, 1260, 1278, 1335, 1420, 1491, 1602, 1780, 1869, 1988, 2130, 2485, 2492, 2556, 2670, 2982, 3115, 3195, 3204, 3738, 4005, 4260, 4473, 4970, 5340, 5607, 5964, 6230, 6319, 6390, 7455, 7476, 8010, 8946, 9345, 9940, 11214, 12460, 12638, 12780, 14910, 16020, 17892, 18690, 18957, 22365, 22428, 25276, 28035, 29820, 31595, 37380, 37914, 44233, 44730, 56070, 56871, 63190, 75828, 88466, 89460, 94785, 112140, 113742, 126380, 132699, 176932, 189570, 221165, 227484, 265398, 284355, 379140, 398097, 442330, 530796, 568710, 663495, 796194, 884660, 1137420, 1326990, 1592388, 1990485, 2653980, 3980970, 7961940]

約数ペア:

[(1, 7961940), (2, 3980970), (3, 2653980), (4, 1990485), (5, 1592388), (6, 1326990), (7, 1137420), (9, 884660), (10, 796194), (12, 663495), (14, 568710), (15, 530796), (18, 442330), (20, 398097), (21, 379140), (28, 284355), (30, 265398), (35, 227484), (36, 221165), (42, 189570), (45, 176932), (60, 132699), (63, 126380), (70, 113742), (71, 112140), (84, 94785), (89, 89460), (90, 88466), (105, 75828), (126, 63190), (140, 56871), (142, 56070), (178, 44730), (180, 44233), (210, 37914), (213, 37380), (252, 31595), (267, 29820), (284, 28035), (315, 25276), (355, 22428), (356, 22365), (420, 18957), (426, 18690), (445, 17892), (497, 16020), (534, 14910), (623, 12780), (630, 12638), (639, 12460), (710, 11214), (801, 9940), (852, 9345), (890, 8946), (994, 8010), (1065, 7476), (1068, 7455), (1246, 6390), (1260, 6319), (1278, 6230), (1335, 5964), (1420, 5607), (1491, 5340), (1602, 4970), (1780, 4473), (1869, 4260), (1988, 4005), (2130, 3738), (2485, 3204), (2492, 3195), (2556, 3115), (2670, 2982)]