20387388

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1489}}^1$

素因数の和:1666

約数の個数: 48

約数和(自身を含む): 54736640

約数和(自身を除く): 34349252

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 163, 326, 489, 652, 978, 1141, 1489, 1956, 2282, 2978, 3423, 4467, 4564, 5956, 6846, 8934, 10423, 13692, 17868, 20846, 31269, 41692, 62538, 125076, 242707, 485414, 728121, 970828, 1456242, 1698949, 2912484, 3397898, 5096847, 6795796, 10193694, 20387388]

約数ペア:

[(1, 20387388), (2, 10193694), (3, 6795796), (4, 5096847), (6, 3397898), (7, 2912484), (12, 1698949), (14, 1456242), (21, 970828), (28, 728121), (42, 485414), (84, 242707), (163, 125076), (326, 62538), (489, 41692), (652, 31269), (978, 20846), (1141, 17868), (1489, 13692), (1956, 10423), (2282, 8934), (2978, 6846), (3423, 5956), (4467, 4564)]