20666664

素因数分解:

$2^3\times 3^5\times {\mathrm{10631}}^1$

素因数の和:10652

約数の個数: 48

約数和(自身を含む): 58050720

約数和(自身を除く): 37384056

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 243, 324, 486, 648, 972, 1944, 10631, 21262, 31893, 42524, 63786, 85048, 95679, 127572, 191358, 255144, 287037, 382716, 574074, 765432, 861111, 1148148, 1722222, 2296296, 2583333, 3444444, 5166666, 6888888, 10333332, 20666664]

約数ペア:

[(1, 20666664), (2, 10333332), (3, 6888888), (4, 5166666), (6, 3444444), (8, 2583333), (9, 2296296), (12, 1722222), (18, 1148148), (24, 861111), (27, 765432), (36, 574074), (54, 382716), (72, 287037), (81, 255144), (108, 191358), (162, 127572), (216, 95679), (243, 85048), (324, 63786), (486, 42524), (648, 31893), (972, 21262), (1944, 10631)]