20074540

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 43593984

約数和(自身を除く): 23519444

約数列:

[1, 2, 4, 5, 10, 20, 67, 71, 134, 142, 211, 268, 284, 335, 355, 422, 670, 710, 844, 1055, 1340, 1420, 2110, 4220, 4757, 9514, 14137, 14981, 19028, 23785, 28274, 29962, 47570, 56548, 59924, 70685, 74905, 95140, 141370, 149810, 282740, 299620, 1003727, 2007454, 4014908, 5018635, 10037270, 20074540]

約数ペア:

[(1, 20074540), (2, 10037270), (4, 5018635), (5, 4014908), (10, 2007454), (20, 1003727), (67, 299620), (71, 282740), (134, 149810), (142, 141370), (211, 95140), (268, 74905), (284, 70685), (335, 59924), (355, 56548), (422, 47570), (670, 29962), (710, 28274), (844, 23785), (1055, 19028), (1340, 14981), (1420, 14137), (2110, 9514), (4220, 4757)]