21394856

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{5381}}^1$

素因数の和:5465

約数の個数: 32

約数和(自身を含む): 46500480

約数和(自身を除く): 25105624

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 5381, 10762, 21524, 37667, 43048, 75334, 150668, 301336, 382051, 764102, 1528204, 2674357, 3056408, 5348714, 10697428, 21394856]

約数ペア:

[(1, 21394856), (2, 10697428), (4, 5348714), (7, 3056408), (8, 2674357), (14, 1528204), (28, 764102), (56, 382051), (71, 301336), (142, 150668), (284, 75334), (497, 43048), (568, 37667), (994, 21524), (1988, 10762), (3976, 5381)]