20689850

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{241}}^1$

素因数の和:371

約数の個数: 48

約数和(自身を含む): 41321016

約数和(自身を除く): 20631166

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 101, 170, 202, 241, 425, 482, 505, 850, 1010, 1205, 1717, 2410, 2525, 3434, 4097, 5050, 6025, 8194, 8585, 12050, 17170, 20485, 24341, 40970, 42925, 48682, 85850, 102425, 121705, 204850, 243410, 413797, 608525, 827594, 1217050, 2068985, 4137970, 10344925, 20689850]

約数ペア:

[(1, 20689850), (2, 10344925), (5, 4137970), (10, 2068985), (17, 1217050), (25, 827594), (34, 608525), (50, 413797), (85, 243410), (101, 204850), (170, 121705), (202, 102425), (241, 85850), (425, 48682), (482, 42925), (505, 40970), (850, 24341), (1010, 20485), (1205, 17170), (1717, 12050), (2410, 8585), (2525, 8194), (3434, 6025), (4097, 5050)]