15709940

素因数分解:

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

素因数の和:312

約数の個数: 48

約数和(自身を含む): 34164480

約数和(自身を除く): 18454540

約数列:

[1, 2, 4, 5, 10, 20, 61, 79, 122, 158, 163, 244, 305, 316, 326, 395, 610, 652, 790, 815, 1220, 1580, 1630, 3260, 4819, 9638, 9943, 12877, 19276, 19886, 24095, 25754, 39772, 48190, 49715, 51508, 64385, 96380, 99430, 128770, 198860, 257540, 785497, 1570994, 3141988, 3927485, 7854970, 15709940]

約数ペア:

[(1, 15709940), (2, 7854970), (4, 3927485), (5, 3141988), (10, 1570994), (20, 785497), (61, 257540), (79, 198860), (122, 128770), (158, 99430), (163, 96380), (244, 64385), (305, 51508), (316, 49715), (326, 48190), (395, 39772), (610, 25754), (652, 24095), (790, 19886), (815, 19276), (1220, 12877), (1580, 9943), (1630, 9638), (3260, 4819)]