21910650

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{43}}^2\times {\mathrm{79}}^1$

素因数の和:180

約数の個数: 72

約数和(自身を含む): 56335680

約数和(自身を除く): 34425030

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 43, 50, 75, 79, 86, 129, 150, 158, 215, 237, 258, 395, 430, 474, 645, 790, 1075, 1185, 1290, 1849, 1975, 2150, 2370, 3225, 3397, 3698, 3950, 5547, 5925, 6450, 6794, 9245, 10191, 11094, 11850, 16985, 18490, 20382, 27735, 33970, 46225, 50955, 55470, 84925, 92450, 101910, 138675, 146071, 169850, 254775, 277350, 292142, 438213, 509550, 730355, 876426, 1460710, 2191065, 3651775, 4382130, 7303550, 10955325, 21910650]

約数ペア:

[(1, 21910650), (2, 10955325), (3, 7303550), (5, 4382130), (6, 3651775), (10, 2191065), (15, 1460710), (25, 876426), (30, 730355), (43, 509550), (50, 438213), (75, 292142), (79, 277350), (86, 254775), (129, 169850), (150, 146071), (158, 138675), (215, 101910), (237, 92450), (258, 84925), (395, 55470), (430, 50955), (474, 46225), (645, 33970), (790, 27735), (1075, 20382), (1185, 18490), (1290, 16985), (1849, 11850), (1975, 11094), (2150, 10191), (2370, 9245), (3225, 6794), (3397, 6450), (3698, 5925), (3950, 5547)]