81261290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{659}}^1$

素因数の和:755

約数の個数: 64

約数和(自身を含む): 171072000

約数和(自身を除く): 89810710

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 59, 95, 110, 118, 190, 209, 295, 418, 590, 649, 659, 1045, 1121, 1298, 1318, 2090, 2242, 3245, 3295, 5605, 6490, 6590, 7249, 11210, 12331, 12521, 14498, 24662, 25042, 36245, 38881, 61655, 62605, 72490, 77762, 123310, 125210, 137731, 194405, 275462, 388810, 427691, 688655, 738739, 855382, 1377310, 1477478, 2138455, 3693695, 4276910, 7387390, 8126129, 16252258, 40630645, 81261290]

約数ペア:

[(1, 81261290), (2, 40630645), (5, 16252258), (10, 8126129), (11, 7387390), (19, 4276910), (22, 3693695), (38, 2138455), (55, 1477478), (59, 1377310), (95, 855382), (110, 738739), (118, 688655), (190, 427691), (209, 388810), (295, 275462), (418, 194405), (590, 137731), (649, 125210), (659, 123310), (1045, 77762), (1121, 72490), (1298, 62605), (1318, 61655), (2090, 38881), (2242, 36245), (3245, 25042), (3295, 24662), (5605, 14498), (6490, 12521), (6590, 12331), (7249, 11210)]