31419880

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1$

素因数の和:314

約数の個数: 64

約数和(自身を含む): 73209600

約数和(自身を除く): 41789720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 79, 122, 158, 163, 244, 305, 316, 326, 395, 488, 610, 632, 652, 790, 815, 1220, 1304, 1580, 1630, 2440, 3160, 3260, 4819, 6520, 9638, 9943, 12877, 19276, 19886, 24095, 25754, 38552, 39772, 48190, 49715, 51508, 64385, 79544, 96380, 99430, 103016, 128770, 192760, 198860, 257540, 397720, 515080, 785497, 1570994, 3141988, 3927485, 6283976, 7854970, 15709940, 31419880]

約数ペア:

[(1, 31419880), (2, 15709940), (4, 7854970), (5, 6283976), (8, 3927485), (10, 3141988), (20, 1570994), (40, 785497), (61, 515080), (79, 397720), (122, 257540), (158, 198860), (163, 192760), (244, 128770), (305, 103016), (316, 99430), (326, 96380), (395, 79544), (488, 64385), (610, 51508), (632, 49715), (652, 48190), (790, 39772), (815, 38552), (1220, 25754), (1304, 24095), (1580, 19886), (1630, 19276), (2440, 12877), (3160, 9943), (3260, 9638), (4819, 6520)]