21654840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{997}}^1$

素因数の和:1192

約数の個数: 64

約数和(自身を含む): 65388960

約数和(自身を除く): 43734120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 181, 362, 543, 724, 905, 997, 1086, 1448, 1810, 1994, 2172, 2715, 2991, 3620, 3988, 4344, 4985, 5430, 5982, 7240, 7976, 9970, 10860, 11964, 14955, 19940, 21720, 23928, 29910, 39880, 59820, 119640, 180457, 360914, 541371, 721828, 902285, 1082742, 1443656, 1804570, 2165484, 2706855, 3609140, 4330968, 5413710, 7218280, 10827420, 21654840]

約数ペア:

[(1, 21654840), (2, 10827420), (3, 7218280), (4, 5413710), (5, 4330968), (6, 3609140), (8, 2706855), (10, 2165484), (12, 1804570), (15, 1443656), (20, 1082742), (24, 902285), (30, 721828), (40, 541371), (60, 360914), (120, 180457), (181, 119640), (362, 59820), (543, 39880), (724, 29910), (905, 23928), (997, 21720), (1086, 19940), (1448, 14955), (1810, 11964), (1994, 10860), (2172, 9970), (2715, 7976), (2991, 7240), (3620, 5982), (3988, 5430), (4344, 4985)]