81933520

素因数分解:

$2^4\times 5^1\times {\mathrm{449}}^1\times {\mathrm{2281}}^1$

素因数の和:2743

約数の個数: 40

約数和(自身を含む): 191003400

約数和(自身を除く): 109069880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 449, 898, 1796, 2245, 2281, 3592, 4490, 4562, 7184, 8980, 9124, 11405, 17960, 18248, 22810, 35920, 36496, 45620, 91240, 182480, 1024169, 2048338, 4096676, 5120845, 8193352, 10241690, 16386704, 20483380, 40966760, 81933520]

約数ペア:

[(1, 81933520), (2, 40966760), (4, 20483380), (5, 16386704), (8, 10241690), (10, 8193352), (16, 5120845), (20, 4096676), (40, 2048338), (80, 1024169), (449, 182480), (898, 91240), (1796, 45620), (2245, 36496), (2281, 35920), (3592, 22810), (4490, 18248), (4562, 17960), (7184, 11405), (8980, 9124)]