128838780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{102253}}^1$

素因数の和:102275

約数の個数: 72

約数和(自身を含む): 446645472

約数和(自身を除く): 317806692

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 102253, 204506, 306759, 409012, 511265, 613518, 715771, 920277, 1022530, 1227036, 1431542, 1533795, 1840554, 2045060, 2147313, 2863084, 3067590, 3578855, 3681108, 4294626, 4601385, 6135180, 6441939, 7157710, 8589252, 9202770, 10736565, 12883878, 14315420, 18405540, 21473130, 25767756, 32209695, 42946260, 64419390, 128838780]

約数ペア:

[(1, 128838780), (2, 64419390), (3, 42946260), (4, 32209695), (5, 25767756), (6, 21473130), (7, 18405540), (9, 14315420), (10, 12883878), (12, 10736565), (14, 9202770), (15, 8589252), (18, 7157710), (20, 6441939), (21, 6135180), (28, 4601385), (30, 4294626), (35, 3681108), (36, 3578855), (42, 3067590), (45, 2863084), (60, 2147313), (63, 2045060), (70, 1840554), (84, 1533795), (90, 1431542), (105, 1227036), (126, 1022530), (140, 920277), (180, 715771), (210, 613518), (252, 511265), (315, 409012), (420, 306759), (630, 204506), (1260, 102253)]