20429520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{3701}}^1$

素因数の和:3740

約数の個数: 80

約数和(自身を含む): 66102912

約数和(自身を除く): 45673392

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 48, 60, 69, 80, 92, 115, 120, 138, 184, 230, 240, 276, 345, 368, 460, 552, 690, 920, 1104, 1380, 1840, 2760, 3701, 5520, 7402, 11103, 14804, 18505, 22206, 29608, 37010, 44412, 55515, 59216, 74020, 85123, 88824, 111030, 148040, 170246, 177648, 222060, 255369, 296080, 340492, 425615, 444120, 510738, 680984, 851230, 888240, 1021476, 1276845, 1361968, 1702460, 2042952, 2553690, 3404920, 4085904, 5107380, 6809840, 10214760, 20429520]

約数ペア:

[(1, 20429520), (2, 10214760), (3, 6809840), (4, 5107380), (5, 4085904), (6, 3404920), (8, 2553690), (10, 2042952), (12, 1702460), (15, 1361968), (16, 1276845), (20, 1021476), (23, 888240), (24, 851230), (30, 680984), (40, 510738), (46, 444120), (48, 425615), (60, 340492), (69, 296080), (80, 255369), (92, 222060), (115, 177648), (120, 170246), (138, 148040), (184, 111030), (230, 88824), (240, 85123), (276, 74020), (345, 59216), (368, 55515), (460, 44412), (552, 37010), (690, 29608), (920, 22206), (1104, 18505), (1380, 14804), (1840, 11103), (2760, 7402), (3701, 5520)]