20808190

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2389}}^1$

素因数の和:2476

約数の個数: 32

約数和(自身を含む): 40955040

約数和(自身を除く): 20146850

約数列:

[1, 2, 5, 10, 13, 26, 65, 67, 130, 134, 335, 670, 871, 1742, 2389, 4355, 4778, 8710, 11945, 23890, 31057, 62114, 155285, 160063, 310570, 320126, 800315, 1600630, 2080819, 4161638, 10404095, 20808190]

約数ペア:

[(1, 20808190), (2, 10404095), (5, 4161638), (10, 2080819), (13, 1600630), (26, 800315), (65, 320126), (67, 310570), (130, 160063), (134, 155285), (335, 62114), (670, 31057), (871, 23890), (1742, 11945), (2389, 8710), (4355, 4778)]