19860830

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2543}}^1$

素因数の和:2632

約数の個数: 32

約数和(自身を含む): 39564288

約数和(自身を除く): 19703458

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 355, 710, 781, 1562, 2543, 3905, 5086, 7810, 12715, 25430, 27973, 55946, 139865, 180553, 279730, 361106, 902765, 1805530, 1986083, 3972166, 9930415, 19860830]

約数ペア:

[(1, 19860830), (2, 9930415), (5, 3972166), (10, 1986083), (11, 1805530), (22, 902765), (55, 361106), (71, 279730), (110, 180553), (142, 139865), (355, 55946), (710, 27973), (781, 25430), (1562, 12715), (2543, 7810), (3905, 5086)]