16978340

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{401}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 37482480

約数和(自身を除く): 20504140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 73, 116, 145, 146, 290, 292, 365, 401, 580, 730, 802, 1460, 1604, 2005, 2117, 4010, 4234, 8020, 8468, 10585, 11629, 21170, 23258, 29273, 42340, 46516, 58145, 58546, 116290, 117092, 146365, 232580, 292730, 585460, 848917, 1697834, 3395668, 4244585, 8489170, 16978340]

約数ペア:

[(1, 16978340), (2, 8489170), (4, 4244585), (5, 3395668), (10, 1697834), (20, 848917), (29, 585460), (58, 292730), (73, 232580), (116, 146365), (145, 117092), (146, 116290), (290, 58546), (292, 58145), (365, 46516), (401, 42340), (580, 29273), (730, 23258), (802, 21170), (1460, 11629), (1604, 10585), (2005, 8468), (2117, 8020), (4010, 4234)]