21381048

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{431}}^1$

素因数の和:509

約数の個数: 96

約数和(自身を含む): 63685440

約数和(自身を除く): 42304392

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 53, 72, 78, 104, 106, 117, 156, 159, 212, 234, 312, 318, 424, 431, 468, 477, 636, 689, 862, 936, 954, 1272, 1293, 1378, 1724, 1908, 2067, 2586, 2756, 3448, 3816, 3879, 4134, 5172, 5512, 5603, 6201, 7758, 8268, 10344, 11206, 12402, 15516, 16536, 16809, 22412, 22843, 24804, 31032, 33618, 44824, 45686, 49608, 50427, 67236, 68529, 91372, 100854, 134472, 137058, 182744, 201708, 205587, 274116, 296959, 403416, 411174, 548232, 593918, 822348, 890877, 1187836, 1644696, 1781754, 2375672, 2672631, 3563508, 5345262, 7127016, 10690524, 21381048]

約数ペア:

[(1, 21381048), (2, 10690524), (3, 7127016), (4, 5345262), (6, 3563508), (8, 2672631), (9, 2375672), (12, 1781754), (13, 1644696), (18, 1187836), (24, 890877), (26, 822348), (36, 593918), (39, 548232), (52, 411174), (53, 403416), (72, 296959), (78, 274116), (104, 205587), (106, 201708), (117, 182744), (156, 137058), (159, 134472), (212, 100854), (234, 91372), (312, 68529), (318, 67236), (424, 50427), (431, 49608), (468, 45686), (477, 44824), (636, 33618), (689, 31032), (862, 24804), (936, 22843), (954, 22412), (1272, 16809), (1293, 16536), (1378, 15516), (1724, 12402), (1908, 11206), (2067, 10344), (2586, 8268), (2756, 7758), (3448, 6201), (3816, 5603), (3879, 5512), (4134, 5172)]