640581780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{983}}^1\times {\mathrm{10861}}^1$

素因数の和:11856

約数の個数: 48

約数和(自身を含む): 1795618944

約数和(自身を除く): 1155037164

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 983, 1966, 2949, 3932, 4915, 5898, 9830, 10861, 11796, 14745, 19660, 21722, 29490, 32583, 43444, 54305, 58980, 65166, 108610, 130332, 162915, 217220, 325830, 651660, 10676363, 21352726, 32029089, 42705452, 53381815, 64058178, 106763630, 128116356, 160145445, 213527260, 320290890, 640581780]

約数ペア:

[(1, 640581780), (2, 320290890), (3, 213527260), (4, 160145445), (5, 128116356), (6, 106763630), (10, 64058178), (12, 53381815), (15, 42705452), (20, 32029089), (30, 21352726), (60, 10676363), (983, 651660), (1966, 325830), (2949, 217220), (3932, 162915), (4915, 130332), (5898, 108610), (9830, 65166), (10861, 58980), (11796, 54305), (14745, 43444), (19660, 32583), (21722, 29490)]