21381700

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 49137480

約数和(自身を除く): 27755780

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 73, 100, 101, 116, 145, 146, 202, 290, 292, 365, 404, 505, 580, 725, 730, 1010, 1450, 1460, 1825, 2020, 2117, 2525, 2900, 2929, 3650, 4234, 5050, 5858, 7300, 7373, 8468, 10100, 10585, 11716, 14645, 14746, 21170, 29290, 29492, 36865, 42340, 52925, 58580, 73225, 73730, 105850, 146450, 147460, 184325, 211700, 213817, 292900, 368650, 427634, 737300, 855268, 1069085, 2138170, 4276340, 5345425, 10690850, 21381700]

約数ペア:

[(1, 21381700), (2, 10690850), (4, 5345425), (5, 4276340), (10, 2138170), (20, 1069085), (25, 855268), (29, 737300), (50, 427634), (58, 368650), (73, 292900), (100, 213817), (101, 211700), (116, 184325), (145, 147460), (146, 146450), (202, 105850), (290, 73730), (292, 73225), (365, 58580), (404, 52925), (505, 42340), (580, 36865), (725, 29492), (730, 29290), (1010, 21170), (1450, 14746), (1460, 14645), (1825, 11716), (2020, 10585), (2117, 10100), (2525, 8468), (2900, 7373), (2929, 7300), (3650, 5858), (4234, 5050)]