204900700

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{421}}^1$

素因数の和:623

約数の個数: 72

約数和(自身を含む): 462998144

約数和(自身を除く): 258097444

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 157, 310, 314, 421, 620, 628, 775, 785, 842, 1550, 1570, 1684, 2105, 3100, 3140, 3925, 4210, 4867, 7850, 8420, 9734, 10525, 13051, 15700, 19468, 21050, 24335, 26102, 42100, 48670, 52204, 65255, 66097, 97340, 121675, 130510, 132194, 243350, 261020, 264388, 326275, 330485, 486700, 652550, 660970, 1305100, 1321940, 1652425, 2049007, 3304850, 4098014, 6609700, 8196028, 10245035, 20490070, 40980140, 51225175, 102450350, 204900700]

約数ペア:

[(1, 204900700), (2, 102450350), (4, 51225175), (5, 40980140), (10, 20490070), (20, 10245035), (25, 8196028), (31, 6609700), (50, 4098014), (62, 3304850), (100, 2049007), (124, 1652425), (155, 1321940), (157, 1305100), (310, 660970), (314, 652550), (421, 486700), (620, 330485), (628, 326275), (775, 264388), (785, 261020), (842, 243350), (1550, 132194), (1570, 130510), (1684, 121675), (2105, 97340), (3100, 66097), (3140, 65255), (3925, 52204), (4210, 48670), (4867, 42100), (7850, 26102), (8420, 24335), (9734, 21050), (10525, 19468), (13051, 15700)]