40980140

素因数分解:

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

素因数の和:618

約数の個数: 48

約数和(自身を含む): 89612544

約数和(自身を除く): 48632404

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 157, 310, 314, 421, 620, 628, 785, 842, 1570, 1684, 2105, 3140, 4210, 4867, 8420, 9734, 13051, 19468, 24335, 26102, 48670, 52204, 65255, 66097, 97340, 130510, 132194, 261020, 264388, 330485, 660970, 1321940, 2049007, 4098014, 8196028, 10245035, 20490070, 40980140]

約数ペア:

[(1, 40980140), (2, 20490070), (4, 10245035), (5, 8196028), (10, 4098014), (20, 2049007), (31, 1321940), (62, 660970), (124, 330485), (155, 264388), (157, 261020), (310, 132194), (314, 130510), (421, 97340), (620, 66097), (628, 65255), (785, 52204), (842, 48670), (1570, 26102), (1684, 24335), (2105, 19468), (3140, 13051), (4210, 9734), (4867, 8420)]