79720220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1811}}^1$

素因数の和:1922

約数の個数: 48

約数和(自身を含む): 175343616

約数和(自身を除く): 95623396

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 124, 142, 155, 284, 310, 355, 620, 710, 1420, 1811, 2201, 3622, 4402, 7244, 8804, 9055, 11005, 18110, 22010, 36220, 44020, 56141, 112282, 128581, 224564, 257162, 280705, 514324, 561410, 642905, 1122820, 1285810, 2571620, 3986011, 7972022, 15944044, 19930055, 39860110, 79720220]

約数ペア:

[(1, 79720220), (2, 39860110), (4, 19930055), (5, 15944044), (10, 7972022), (20, 3986011), (31, 2571620), (62, 1285810), (71, 1122820), (124, 642905), (142, 561410), (155, 514324), (284, 280705), (310, 257162), (355, 224564), (620, 128581), (710, 112282), (1420, 56141), (1811, 44020), (2201, 36220), (3622, 22010), (4402, 18110), (7244, 11005), (8804, 9055)]