20004012

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{487}}^1$

素因数の和:667

約数の個数: 72

約数和(自身を含む): 58263296

約数和(自身を除く): 38259284

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 163, 252, 326, 487, 489, 652, 974, 978, 1141, 1461, 1467, 1948, 1956, 2282, 2922, 2934, 3409, 3423, 4383, 4564, 5844, 5868, 6818, 6846, 8766, 10227, 10269, 13636, 13692, 17532, 20454, 20538, 30681, 40908, 41076, 61362, 79381, 122724, 158762, 238143, 317524, 476286, 555667, 714429, 952572, 1111334, 1428858, 1667001, 2222668, 2857716, 3334002, 5001003, 6668004, 10002006, 20004012]

約数ペア:

[(1, 20004012), (2, 10002006), (3, 6668004), (4, 5001003), (6, 3334002), (7, 2857716), (9, 2222668), (12, 1667001), (14, 1428858), (18, 1111334), (21, 952572), (28, 714429), (36, 555667), (42, 476286), (63, 317524), (84, 238143), (126, 158762), (163, 122724), (252, 79381), (326, 61362), (487, 41076), (489, 40908), (652, 30681), (974, 20538), (978, 20454), (1141, 17532), (1461, 13692), (1467, 13636), (1948, 10269), (1956, 10227), (2282, 8766), (2922, 6846), (2934, 6818), (3409, 5868), (3423, 5844), (4383, 4564)]