51437780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{421}}^1$

素因数の和:620

約数の個数: 48

約数和(自身を含む): 111661200

約数和(自身を除く): 60223420

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 149, 164, 205, 298, 410, 421, 596, 745, 820, 842, 1490, 1684, 2105, 2980, 4210, 6109, 8420, 12218, 17261, 24436, 30545, 34522, 61090, 62729, 69044, 86305, 122180, 125458, 172610, 250916, 313645, 345220, 627290, 1254580, 2571889, 5143778, 10287556, 12859445, 25718890, 51437780]

約数ペア:

[(1, 51437780), (2, 25718890), (4, 12859445), (5, 10287556), (10, 5143778), (20, 2571889), (41, 1254580), (82, 627290), (149, 345220), (164, 313645), (205, 250916), (298, 172610), (410, 125458), (421, 122180), (596, 86305), (745, 69044), (820, 62729), (842, 61090), (1490, 34522), (1684, 30545), (2105, 24436), (2980, 17261), (4210, 12218), (6109, 8420)]