1387165720

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{417821}}^1$

素因数の和:417915

約数の個数: 32

約数和(自身を含む): 3158734320

約数和(自身を除く): 1771568600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 417821, 835642, 1671284, 2089105, 3342568, 4178210, 8356420, 16712840, 34679143, 69358286, 138716572, 173395715, 277433144, 346791430, 693582860, 1387165720]

約数ペア:

[(1, 1387165720), (2, 693582860), (4, 346791430), (5, 277433144), (8, 173395715), (10, 138716572), (20, 69358286), (40, 34679143), (83, 16712840), (166, 8356420), (332, 4178210), (415, 3342568), (664, 2089105), (830, 1671284), (1660, 835642), (3320, 417821)]