209514860

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{167}}^1\times {\mathrm{421}}^1$

素因数の和:746

約数の個数: 48

約数和(自身を含む): 446644800

約数和(自身を除く): 237129940

約数列:

[1, 2, 4, 5, 10, 20, 149, 167, 298, 334, 421, 596, 668, 745, 835, 842, 1490, 1670, 1684, 2105, 2980, 3340, 4210, 8420, 24883, 49766, 62729, 70307, 99532, 124415, 125458, 140614, 248830, 250916, 281228, 313645, 351535, 497660, 627290, 703070, 1254580, 1406140, 10475743, 20951486, 41902972, 52378715, 104757430, 209514860]

約数ペア:

[(1, 209514860), (2, 104757430), (4, 52378715), (5, 41902972), (10, 20951486), (20, 10475743), (149, 1406140), (167, 1254580), (298, 703070), (334, 627290), (421, 497660), (596, 351535), (668, 313645), (745, 281228), (835, 250916), (842, 248830), (1490, 140614), (1670, 125458), (1684, 124415), (2105, 99532), (2980, 70307), (3340, 62729), (4210, 49766), (8420, 24883)]