21562995

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{331}}^1$

素因数の和:483

約数の個数: 32

約数和(自身を含む): 35760384

約数和(自身を除く): 14197389

約数列:

[1, 3, 5, 15, 43, 101, 129, 215, 303, 331, 505, 645, 993, 1515, 1655, 4343, 4965, 13029, 14233, 21715, 33431, 42699, 65145, 71165, 100293, 167155, 213495, 501465, 1437533, 4312599, 7187665, 21562995]

約数ペア:

[(1, 21562995), (3, 7187665), (5, 4312599), (15, 1437533), (43, 501465), (101, 213495), (129, 167155), (215, 100293), (303, 71165), (331, 65145), (505, 42699), (645, 33431), (993, 21715), (1515, 14233), (1655, 13029), (4343, 4965)]