390666445

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{151}}^1\times {\mathrm{751}}^1$

素因数の和:973

約数の個数: 32

約数和(自身を含む): 518482944

約数和(自身を除く): 127816499

約数列:

[1, 5, 13, 53, 65, 151, 265, 689, 751, 755, 1963, 3445, 3755, 8003, 9763, 9815, 39803, 40015, 48815, 104039, 113401, 199015, 517439, 520195, 567005, 1474213, 2587195, 6010253, 7371065, 30051265, 78133289, 390666445]

約数ペア:

[(1, 390666445), (5, 78133289), (13, 30051265), (53, 7371065), (65, 6010253), (151, 2587195), (265, 1474213), (689, 567005), (751, 520195), (755, 517439), (1963, 199015), (3445, 113401), (3755, 104039), (8003, 48815), (9763, 40015), (9815, 39803)]