64640960

素因数分解:

$2^6\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2557}}^1$

素因数の和:2653

約数の個数: 56

約数和(自身を含む): 155935680

約数和(自身を除く): 91294720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 158, 160, 316, 320, 395, 632, 790, 1264, 1580, 2528, 2557, 3160, 5056, 5114, 6320, 10228, 12640, 12785, 20456, 25280, 25570, 40912, 51140, 81824, 102280, 163648, 202003, 204560, 404006, 409120, 808012, 818240, 1010015, 1616024, 2020030, 3232048, 4040060, 6464096, 8080120, 12928192, 16160240, 32320480, 64640960]

約数ペア:

[(1, 64640960), (2, 32320480), (4, 16160240), (5, 12928192), (8, 8080120), (10, 6464096), (16, 4040060), (20, 3232048), (32, 2020030), (40, 1616024), (64, 1010015), (79, 818240), (80, 808012), (158, 409120), (160, 404006), (316, 204560), (320, 202003), (395, 163648), (632, 102280), (790, 81824), (1264, 51140), (1580, 40912), (2528, 25570), (2557, 25280), (3160, 20456), (5056, 12785), (5114, 12640), (6320, 10228)]