205804520

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{70481}}^1$

素因数の和:70565

約数の個数: 32

約数和(自身を含む): 469410120

約数和(自身を除く): 263605600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 70481, 140962, 281924, 352405, 563848, 704810, 1409620, 2819240, 5145113, 10290226, 20580452, 25725565, 41160904, 51451130, 102902260, 205804520]

約数ペア:

[(1, 205804520), (2, 102902260), (4, 51451130), (5, 41160904), (8, 25725565), (10, 20580452), (20, 10290226), (40, 5145113), (73, 2819240), (146, 1409620), (292, 704810), (365, 563848), (584, 352405), (730, 281924), (1460, 140962), (2920, 70481)]