21081240

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1889}}^1$

素因数の和:1937

約数の個数: 96

約数和(自身を含む): 70761600

約数和(自身を除く): 49680360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 31, 36, 40, 45, 60, 62, 72, 90, 93, 120, 124, 155, 180, 186, 248, 279, 310, 360, 372, 465, 558, 620, 744, 930, 1116, 1240, 1395, 1860, 1889, 2232, 2790, 3720, 3778, 5580, 5667, 7556, 9445, 11160, 11334, 15112, 17001, 18890, 22668, 28335, 34002, 37780, 45336, 56670, 58559, 68004, 75560, 85005, 113340, 117118, 136008, 170010, 175677, 226680, 234236, 292795, 340020, 351354, 468472, 527031, 585590, 680040, 702708, 878385, 1054062, 1171180, 1405416, 1756770, 2108124, 2342360, 2635155, 3513540, 4216248, 5270310, 7027080, 10540620, 21081240]

約数ペア:

[(1, 21081240), (2, 10540620), (3, 7027080), (4, 5270310), (5, 4216248), (6, 3513540), (8, 2635155), (9, 2342360), (10, 2108124), (12, 1756770), (15, 1405416), (18, 1171180), (20, 1054062), (24, 878385), (30, 702708), (31, 680040), (36, 585590), (40, 527031), (45, 468472), (60, 351354), (62, 340020), (72, 292795), (90, 234236), (93, 226680), (120, 175677), (124, 170010), (155, 136008), (180, 117118), (186, 113340), (248, 85005), (279, 75560), (310, 68004), (360, 58559), (372, 56670), (465, 45336), (558, 37780), (620, 34002), (744, 28335), (930, 22668), (1116, 18890), (1240, 17001), (1395, 15112), (1860, 11334), (1889, 11160), (2232, 9445), (2790, 7556), (3720, 5667), (3778, 5580)]