21786710

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:209

約数の個数: 64

約数和(自身を含む): 45209664

約数和(自身を除く): 23422954

約数列:

[1, 2, 5, 10, 11, 22, 37, 53, 55, 74, 101, 106, 110, 185, 202, 265, 370, 407, 505, 530, 583, 814, 1010, 1111, 1166, 1961, 2035, 2222, 2915, 3737, 3922, 4070, 5353, 5555, 5830, 7474, 9805, 10706, 11110, 18685, 19610, 21571, 26765, 37370, 41107, 43142, 53530, 58883, 82214, 107855, 117766, 198061, 205535, 215710, 294415, 396122, 411070, 588830, 990305, 1980610, 2178671, 4357342, 10893355, 21786710]

約数ペア:

[(1, 21786710), (2, 10893355), (5, 4357342), (10, 2178671), (11, 1980610), (22, 990305), (37, 588830), (53, 411070), (55, 396122), (74, 294415), (101, 215710), (106, 205535), (110, 198061), (185, 117766), (202, 107855), (265, 82214), (370, 58883), (407, 53530), (505, 43142), (530, 41107), (583, 37370), (814, 26765), (1010, 21571), (1111, 19610), (1166, 18685), (1961, 11110), (2035, 10706), (2222, 9805), (2915, 7474), (3737, 5830), (3922, 5555), (4070, 5353)]