40740640

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2861}}^1$

素因数の和:2965

約数の個数: 48

約数和(自身を含む): 97365240

約数和(自身を除く): 56624600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 712, 890, 1424, 1780, 2848, 2861, 3560, 5722, 7120, 11444, 14240, 14305, 22888, 28610, 45776, 57220, 91552, 114440, 228880, 254629, 457760, 509258, 1018516, 1273145, 2037032, 2546290, 4074064, 5092580, 8148128, 10185160, 20370320, 40740640]

約数ペア:

[(1, 40740640), (2, 20370320), (4, 10185160), (5, 8148128), (8, 5092580), (10, 4074064), (16, 2546290), (20, 2037032), (32, 1273145), (40, 1018516), (80, 509258), (89, 457760), (160, 254629), (178, 228880), (356, 114440), (445, 91552), (712, 57220), (890, 45776), (1424, 28610), (1780, 22888), (2848, 14305), (2861, 14240), (3560, 11444), (5722, 7120)]