21873520

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{3461}}^1$

素因数の和:3553

約数の個数: 40

約数和(自身を含む): 51514560

約数和(自身を除く): 29641040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 3461, 6320, 6922, 13844, 17305, 27688, 34610, 55376, 69220, 138440, 273419, 276880, 546838, 1093676, 1367095, 2187352, 2734190, 4374704, 5468380, 10936760, 21873520]

約数ペア:

[(1, 21873520), (2, 10936760), (4, 5468380), (5, 4374704), (8, 2734190), (10, 2187352), (16, 1367095), (20, 1093676), (40, 546838), (79, 276880), (80, 273419), (158, 138440), (316, 69220), (395, 55376), (632, 34610), (790, 27688), (1264, 17305), (1580, 13844), (3160, 6922), (3461, 6320)]