639900325

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{197}}^1\times {\mathrm{3169}}^1$

素因数の和:3417

約数の個数: 24

約数和(自身を含む): 817213320

約数和(自身を除く): 177312995

約数列:

[1, 5, 25, 41, 197, 205, 985, 1025, 3169, 4925, 8077, 15845, 40385, 79225, 129929, 201925, 624293, 649645, 3121465, 3248225, 15607325, 25596013, 127980065, 639900325]

約数ペア:

[(1, 639900325), (5, 127980065), (25, 25596013), (41, 15607325), (197, 3248225), (205, 3121465), (985, 649645), (1025, 624293), (3169, 201925), (4925, 129929), (8077, 79225), (15845, 40385)]