20010320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22739}}^1$

素因数の和:22763

約数の個数: 40

約数和(自身を含む): 50755680

約数和(自身を除く): 30745360

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22739, 45478, 90956, 113695, 181912, 227390, 250129, 363824, 454780, 500258, 909560, 1000516, 1250645, 1819120, 2001032, 2501290, 4002064, 5002580, 10005160, 20010320]

約数ペア:

[(1, 20010320), (2, 10005160), (4, 5002580), (5, 4002064), (8, 2501290), (10, 2001032), (11, 1819120), (16, 1250645), (20, 1000516), (22, 909560), (40, 500258), (44, 454780), (55, 363824), (80, 250129), (88, 227390), (110, 181912), (176, 113695), (220, 90956), (440, 45478), (880, 22739)]