38849780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{251}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 83825280

約数和(自身を除く): 44975500

約数列:

[1, 2, 4, 5, 10, 20, 71, 109, 142, 218, 251, 284, 355, 436, 502, 545, 710, 1004, 1090, 1255, 1420, 2180, 2510, 5020, 7739, 15478, 17821, 27359, 30956, 35642, 38695, 54718, 71284, 77390, 89105, 109436, 136795, 154780, 178210, 273590, 356420, 547180, 1942489, 3884978, 7769956, 9712445, 19424890, 38849780]

約数ペア:

[(1, 38849780), (2, 19424890), (4, 9712445), (5, 7769956), (10, 3884978), (20, 1942489), (71, 547180), (109, 356420), (142, 273590), (218, 178210), (251, 154780), (284, 136795), (355, 109436), (436, 89105), (502, 77390), (545, 71284), (710, 54718), (1004, 38695), (1090, 35642), (1255, 30956), (1420, 27359), (2180, 17821), (2510, 15478), (5020, 7739)]