21318770

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 44634240

約数和(自身を除く): 23315470

約数列:

[1, 2, 5, 10, 11, 22, 29, 41, 55, 58, 82, 110, 145, 163, 205, 290, 319, 326, 410, 451, 638, 815, 902, 1189, 1595, 1630, 1793, 2255, 2378, 3190, 3586, 4510, 4727, 5945, 6683, 8965, 9454, 11890, 13079, 13366, 17930, 23635, 26158, 33415, 47270, 51997, 65395, 66830, 73513, 103994, 130790, 147026, 193807, 259985, 367565, 387614, 519970, 735130, 969035, 1938070, 2131877, 4263754, 10659385, 21318770]

約数ペア:

[(1, 21318770), (2, 10659385), (5, 4263754), (10, 2131877), (11, 1938070), (22, 969035), (29, 735130), (41, 519970), (55, 387614), (58, 367565), (82, 259985), (110, 193807), (145, 147026), (163, 130790), (205, 103994), (290, 73513), (319, 66830), (326, 65395), (410, 51997), (451, 47270), (638, 33415), (815, 26158), (902, 23635), (1189, 17930), (1595, 13366), (1630, 13079), (1793, 11890), (2255, 9454), (2378, 8965), (3190, 6683), (3586, 5945), (4510, 4727)]