21328744

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{5059}}^1$

素因数の和:5113

約数の個数: 32

約数和(自身を含む): 43718400

約数和(自身を除く): 22389656

約数列:

[1, 2, 4, 8, 17, 31, 34, 62, 68, 124, 136, 248, 527, 1054, 2108, 4216, 5059, 10118, 20236, 40472, 86003, 156829, 172006, 313658, 344012, 627316, 688024, 1254632, 2666093, 5332186, 10664372, 21328744]

約数ペア:

[(1, 21328744), (2, 10664372), (4, 5332186), (8, 2666093), (17, 1254632), (31, 688024), (34, 627316), (62, 344012), (68, 313658), (124, 172006), (136, 156829), (248, 86003), (527, 40472), (1054, 20236), (2108, 10118), (4216, 5059)]