20973815

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{331}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 28684800

約数和(自身を除く): 7710985

約数列:

[1, 5, 19, 23, 29, 95, 115, 145, 331, 437, 551, 667, 1655, 2185, 2755, 3335, 6289, 7613, 9599, 12673, 31445, 38065, 47995, 63365, 144647, 182381, 220777, 723235, 911905, 1103885, 4194763, 20973815]

約数ペア:

[(1, 20973815), (5, 4194763), (19, 1103885), (23, 911905), (29, 723235), (95, 220777), (115, 182381), (145, 144647), (331, 63365), (437, 47995), (551, 38065), (667, 31445), (1655, 12673), (2185, 9599), (2755, 7613), (3335, 6289)]