204065820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{161957}}^1$

素因数の和:161979

約数の個数: 72

約数和(自身を含む): 707432544

約数和(自身を除く): 503366724

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 161957, 323914, 485871, 647828, 809785, 971742, 1133699, 1457613, 1619570, 1943484, 2267398, 2429355, 2915226, 3239140, 3401097, 4534796, 4858710, 5668495, 5830452, 6802194, 7288065, 9717420, 10203291, 11336990, 13604388, 14576130, 17005485, 20406582, 22673980, 29152260, 34010970, 40813164, 51016455, 68021940, 102032910, 204065820]

約数ペア:

[(1, 204065820), (2, 102032910), (3, 68021940), (4, 51016455), (5, 40813164), (6, 34010970), (7, 29152260), (9, 22673980), (10, 20406582), (12, 17005485), (14, 14576130), (15, 13604388), (18, 11336990), (20, 10203291), (21, 9717420), (28, 7288065), (30, 6802194), (35, 5830452), (36, 5668495), (42, 4858710), (45, 4534796), (60, 3401097), (63, 3239140), (70, 2915226), (84, 2429355), (90, 2267398), (105, 1943484), (126, 1619570), (140, 1457613), (180, 1133699), (210, 971742), (252, 809785), (315, 647828), (420, 485871), (630, 323914), (1260, 161957)]