20450040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13109}}^1$

素因数の和:13136

約数の個数: 64

約数和(自身を含む): 66074400

約数和(自身を除く): 45624360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13109, 26218, 39327, 52436, 65545, 78654, 104872, 131090, 157308, 170417, 196635, 262180, 314616, 340834, 393270, 511251, 524360, 681668, 786540, 852085, 1022502, 1363336, 1573080, 1704170, 2045004, 2556255, 3408340, 4090008, 5112510, 6816680, 10225020, 20450040]

約数ペア:

[(1, 20450040), (2, 10225020), (3, 6816680), (4, 5112510), (5, 4090008), (6, 3408340), (8, 2556255), (10, 2045004), (12, 1704170), (13, 1573080), (15, 1363336), (20, 1022502), (24, 852085), (26, 786540), (30, 681668), (39, 524360), (40, 511251), (52, 393270), (60, 340834), (65, 314616), (78, 262180), (104, 196635), (120, 170417), (130, 157308), (156, 131090), (195, 104872), (260, 78654), (312, 65545), (390, 52436), (520, 39327), (780, 26218), (1560, 13109)]