20890260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2699}}^1$

素因数の和:2757

約数の個数: 72

約数和(自身を含む): 64864800

約数和(自身を除く): 43974540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 2699, 3870, 5398, 7740, 8097, 10796, 13495, 16194, 24291, 26990, 32388, 40485, 48582, 53980, 80970, 97164, 116057, 121455, 161940, 232114, 242910, 348171, 464228, 485820, 580285, 696342, 1044513, 1160570, 1392684, 1740855, 2089026, 2321140, 3481710, 4178052, 5222565, 6963420, 10445130, 20890260]

約数ペア:

[(1, 20890260), (2, 10445130), (3, 6963420), (4, 5222565), (5, 4178052), (6, 3481710), (9, 2321140), (10, 2089026), (12, 1740855), (15, 1392684), (18, 1160570), (20, 1044513), (30, 696342), (36, 580285), (43, 485820), (45, 464228), (60, 348171), (86, 242910), (90, 232114), (129, 161940), (172, 121455), (180, 116057), (215, 97164), (258, 80970), (387, 53980), (430, 48582), (516, 40485), (645, 32388), (774, 26990), (860, 24291), (1290, 16194), (1548, 13495), (1935, 10796), (2580, 8097), (2699, 7740), (3870, 5398)]