665778815

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{491}}^1\times {\mathrm{907}}^1$

素因数の和:1439

約数の個数: 32

約数和(自身を含む): 900619776

約数和(自身を除く): 234840961

約数列:

[1, 5, 13, 23, 65, 115, 299, 491, 907, 1495, 2455, 4535, 6383, 11293, 11791, 20861, 31915, 56465, 58955, 104305, 146809, 271193, 445337, 734045, 1355965, 2226685, 5789381, 10242751, 28946905, 51213755, 133155763, 665778815]

約数ペア:

[(1, 665778815), (5, 133155763), (13, 51213755), (23, 28946905), (65, 10242751), (115, 5789381), (299, 2226685), (491, 1355965), (907, 734045), (1495, 445337), (2455, 271193), (4535, 146809), (6383, 104305), (11293, 58955), (11791, 56465), (20861, 31915)]