38891980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{421}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 85075200

約数和(自身を除く): 46183220

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 149, 155, 298, 310, 421, 596, 620, 745, 842, 1490, 1684, 2105, 2980, 4210, 4619, 8420, 9238, 13051, 18476, 23095, 26102, 46190, 52204, 62729, 65255, 92380, 125458, 130510, 250916, 261020, 313645, 627290, 1254580, 1944599, 3889198, 7778396, 9722995, 19445990, 38891980]

約数ペア:

[(1, 38891980), (2, 19445990), (4, 9722995), (5, 7778396), (10, 3889198), (20, 1944599), (31, 1254580), (62, 627290), (124, 313645), (149, 261020), (155, 250916), (298, 130510), (310, 125458), (421, 92380), (596, 65255), (620, 62729), (745, 52204), (842, 46190), (1490, 26102), (1684, 23095), (2105, 18476), (2980, 13051), (4210, 9238), (4619, 8420)]