51190420

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{179}}^1\times {\mathrm{181}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 110073600

約数和(自身を除く): 58883180

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 179, 181, 316, 358, 362, 395, 716, 724, 790, 895, 905, 1580, 1790, 1810, 3580, 3620, 14141, 14299, 28282, 28598, 32399, 56564, 57196, 64798, 70705, 71495, 129596, 141410, 142990, 161995, 282820, 285980, 323990, 647980, 2559521, 5119042, 10238084, 12797605, 25595210, 51190420]

約数ペア:

[(1, 51190420), (2, 25595210), (4, 12797605), (5, 10238084), (10, 5119042), (20, 2559521), (79, 647980), (158, 323990), (179, 285980), (181, 282820), (316, 161995), (358, 142990), (362, 141410), (395, 129596), (716, 71495), (724, 70705), (790, 64798), (895, 57196), (905, 56564), (1580, 32399), (1790, 28598), (1810, 28282), (3580, 14299), (3620, 14141)]