87838780

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71999}}^1$

素因数の和:72069

約数の個数: 24

約数和(自身を含む): 187488000

約数和(自身を除く): 99649220

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 71999, 143998, 287996, 359995, 719990, 1439980, 4391939, 8783878, 17567756, 21959695, 43919390, 87838780]

約数ペア:

[(1, 87838780), (2, 43919390), (4, 21959695), (5, 17567756), (10, 8783878), (20, 4391939), (61, 1439980), (122, 719990), (244, 359995), (305, 287996), (610, 143998), (1220, 71999)]