20789468

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{557}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 43997184

約数和(自身を除く): 23207716

約数列:

[1, 2, 4, 7, 14, 28, 31, 43, 62, 86, 124, 172, 217, 301, 434, 557, 602, 868, 1114, 1204, 1333, 2228, 2666, 3899, 5332, 7798, 9331, 15596, 17267, 18662, 23951, 34534, 37324, 47902, 69068, 95804, 120869, 167657, 241738, 335314, 483476, 670628, 742481, 1484962, 2969924, 5197367, 10394734, 20789468]

約数ペア:

[(1, 20789468), (2, 10394734), (4, 5197367), (7, 2969924), (14, 1484962), (28, 742481), (31, 670628), (43, 483476), (62, 335314), (86, 241738), (124, 167657), (172, 120869), (217, 95804), (301, 69068), (434, 47902), (557, 37324), (602, 34534), (868, 23951), (1114, 18662), (1204, 17267), (1333, 15596), (2228, 9331), (2666, 7798), (3899, 5332)]