18277580

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{401}}^1$

素因数の和:506

約数の個数: 48

約数和(自身を含む): 40116384

約数和(自身を除く): 21838804

約数列:

[1, 2, 4, 5, 10, 20, 43, 53, 86, 106, 172, 212, 215, 265, 401, 430, 530, 802, 860, 1060, 1604, 2005, 2279, 4010, 4558, 8020, 9116, 11395, 17243, 21253, 22790, 34486, 42506, 45580, 68972, 85012, 86215, 106265, 172430, 212530, 344860, 425060, 913879, 1827758, 3655516, 4569395, 9138790, 18277580]

約数ペア:

[(1, 18277580), (2, 9138790), (4, 4569395), (5, 3655516), (10, 1827758), (20, 913879), (43, 425060), (53, 344860), (86, 212530), (106, 172430), (172, 106265), (212, 86215), (215, 85012), (265, 68972), (401, 45580), (430, 42506), (530, 34486), (802, 22790), (860, 21253), (1060, 17243), (1604, 11395), (2005, 9116), (2279, 8020), (4010, 4558)]