21579472

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{313}}^1$

素因数の和:491

約数の個数: 40

約数和(自身を含む): 43608320

約数和(自身を除く): 22028848

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 139, 248, 278, 313, 496, 556, 626, 1112, 1252, 2224, 2504, 4309, 5008, 8618, 9703, 17236, 19406, 34472, 38812, 43507, 68944, 77624, 87014, 155248, 174028, 348056, 696112, 1348717, 2697434, 5394868, 10789736, 21579472]

約数ペア:

[(1, 21579472), (2, 10789736), (4, 5394868), (8, 2697434), (16, 1348717), (31, 696112), (62, 348056), (124, 174028), (139, 155248), (248, 87014), (278, 77624), (313, 68944), (496, 43507), (556, 38812), (626, 34472), (1112, 19406), (1252, 17236), (2224, 9703), (2504, 8618), (4309, 5008)]