20211720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3917}}^1$

素因数の和:3974

約数の個数: 64

約数和(自身を含む): 62061120

約数和(自身を除く): 41849400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 3917, 5160, 7834, 11751, 15668, 19585, 23502, 31336, 39170, 47004, 58755, 78340, 94008, 117510, 156680, 168431, 235020, 336862, 470040, 505293, 673724, 842155, 1010586, 1347448, 1684310, 2021172, 2526465, 3368620, 4042344, 5052930, 6737240, 10105860, 20211720]

約数ペア:

[(1, 20211720), (2, 10105860), (3, 6737240), (4, 5052930), (5, 4042344), (6, 3368620), (8, 2526465), (10, 2021172), (12, 1684310), (15, 1347448), (20, 1010586), (24, 842155), (30, 673724), (40, 505293), (43, 470040), (60, 336862), (86, 235020), (120, 168431), (129, 156680), (172, 117510), (215, 94008), (258, 78340), (344, 58755), (430, 47004), (516, 39170), (645, 31336), (860, 23502), (1032, 19585), (1290, 15668), (1720, 11751), (2580, 7834), (3917, 5160)]