21816760

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11131}}^1$

素因数の和:11156

約数の個数: 48

約数和(自身を含む): 57107160

約数和(自身を除く): 35290400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 11131, 22262, 44524, 55655, 77917, 89048, 111310, 155834, 222620, 311668, 389585, 445240, 545419, 623336, 779170, 1090838, 1558340, 2181676, 2727095, 3116680, 4363352, 5454190, 10908380, 21816760]

約数ペア:

[(1, 21816760), (2, 10908380), (4, 5454190), (5, 4363352), (7, 3116680), (8, 2727095), (10, 2181676), (14, 1558340), (20, 1090838), (28, 779170), (35, 623336), (40, 545419), (49, 445240), (56, 389585), (70, 311668), (98, 222620), (140, 155834), (196, 111310), (245, 89048), (280, 77917), (392, 55655), (490, 44524), (980, 22262), (1960, 11131)]