2021303920

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{313}}^1\times {\mathrm{907}}^1$

素因数の和:1322

約数の個数: 80

約数和(自身を含む): 4772774880

約数和(自身を除く): 2751470960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 313, 356, 445, 626, 712, 890, 907, 1252, 1424, 1565, 1780, 1814, 2504, 3130, 3560, 3628, 4535, 5008, 6260, 7120, 7256, 9070, 12520, 14512, 18140, 25040, 27857, 36280, 55714, 72560, 80723, 111428, 139285, 161446, 222856, 278570, 283891, 322892, 403615, 445712, 557140, 567782, 645784, 807230, 1114280, 1135564, 1291568, 1419455, 1614460, 2228560, 2271128, 2838910, 3228920, 4542256, 5677820, 6457840, 11355640, 22711280, 25266299, 50532598, 101065196, 126331495, 202130392, 252662990, 404260784, 505325980, 1010651960, 2021303920]

約数ペア:

[(1, 2021303920), (2, 1010651960), (4, 505325980), (5, 404260784), (8, 252662990), (10, 202130392), (16, 126331495), (20, 101065196), (40, 50532598), (80, 25266299), (89, 22711280), (178, 11355640), (313, 6457840), (356, 5677820), (445, 4542256), (626, 3228920), (712, 2838910), (890, 2271128), (907, 2228560), (1252, 1614460), (1424, 1419455), (1565, 1291568), (1780, 1135564), (1814, 1114280), (2504, 807230), (3130, 645784), (3560, 567782), (3628, 557140), (4535, 445712), (5008, 403615), (6260, 322892), (7120, 283891), (7256, 278570), (9070, 222856), (12520, 161446), (14512, 139285), (18140, 111428), (25040, 80723), (27857, 72560), (36280, 55714)]