20370320

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2861}}^1$

素因数の和:2963

約数の個数: 40

約数和(自身を含む): 47909880

約数和(自身を除く): 27539560

約数列:

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

約数ペア:

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