645229879

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{65699}}^1$

素因数の和:65790

約数の個数: 16

約数和(自身を含む): 782092800

約数和(自身を除く): 136862921

約数列:

[1, 7, 23, 61, 161, 427, 1403, 9821, 65699, 459893, 1511077, 4007639, 10577539, 28053473, 92175697, 645229879]

約数ペア:

[(1, 645229879), (7, 92175697), (23, 28053473), (61, 10577539), (161, 4007639), (427, 1511077), (1403, 459893), (9821, 65699)]