138702940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{2687}}^1$

素因数の和:2814

約数の個数: 48

約数和(自身を含む): 304819200

約数和(自身を除く): 166116260

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 89, 116, 145, 178, 290, 356, 445, 580, 890, 1780, 2581, 2687, 5162, 5374, 10324, 10748, 12905, 13435, 25810, 26870, 51620, 53740, 77923, 155846, 239143, 311692, 389615, 478286, 779230, 956572, 1195715, 1558460, 2391430, 4782860, 6935147, 13870294, 27740588, 34675735, 69351470, 138702940]

約数ペア:

[(1, 138702940), (2, 69351470), (4, 34675735), (5, 27740588), (10, 13870294), (20, 6935147), (29, 4782860), (58, 2391430), (89, 1558460), (116, 1195715), (145, 956572), (178, 779230), (290, 478286), (356, 389615), (445, 311692), (580, 239143), (890, 155846), (1780, 77923), (2581, 53740), (2687, 51620), (5162, 26870), (5374, 25810), (10324, 13435), (10748, 12905)]