669654320

素因数分解:

$2^4\times 5^1\times {\mathrm{8370679}}^1$

素因数の和:8370692

約数の個数: 20

約数和(自身を含む): 1556946480

約数和(自身を除く): 887292160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8370679, 16741358, 33482716, 41853395, 66965432, 83706790, 133930864, 167413580, 334827160, 669654320]

約数ペア:

[(1, 669654320), (2, 334827160), (4, 167413580), (5, 133930864), (8, 83706790), (10, 66965432), (16, 41853395), (20, 33482716), (40, 16741358), (80, 8370679)]