20923984

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{163}}^1$

素因数の和:355

約数の個数: 40

約数和(自身を含む): 41729472

約数和(自身を除く): 20805488

約数列:

[1, 2, 4, 8, 16, 71, 113, 142, 163, 226, 284, 326, 452, 568, 652, 904, 1136, 1304, 1808, 2608, 8023, 11573, 16046, 18419, 23146, 32092, 36838, 46292, 64184, 73676, 92584, 128368, 147352, 185168, 294704, 1307749, 2615498, 5230996, 10461992, 20923984]

約数ペア:

[(1, 20923984), (2, 10461992), (4, 5230996), (8, 2615498), (16, 1307749), (71, 294704), (113, 185168), (142, 147352), (163, 128368), (226, 92584), (284, 73676), (326, 64184), (452, 46292), (568, 36838), (652, 32092), (904, 23146), (1136, 18419), (1304, 16046), (1808, 11573), (2608, 8023)]