128873640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{153421}}^1$

素因数の和:153442

約数の個数: 64

約数和(自身を含む): 441855360

約数和(自身を除く): 312981720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 153421, 306842, 460263, 613684, 767105, 920526, 1073947, 1227368, 1534210, 1841052, 2147894, 2301315, 3068420, 3221841, 3682104, 4295788, 4602630, 5369735, 6136840, 6443682, 8591576, 9205260, 10739470, 12887364, 16109205, 18410520, 21478940, 25774728, 32218410, 42957880, 64436820, 128873640]

約数ペア:

[(1, 128873640), (2, 64436820), (3, 42957880), (4, 32218410), (5, 25774728), (6, 21478940), (7, 18410520), (8, 16109205), (10, 12887364), (12, 10739470), (14, 9205260), (15, 8591576), (20, 6443682), (21, 6136840), (24, 5369735), (28, 4602630), (30, 4295788), (35, 3682104), (40, 3221841), (42, 3068420), (56, 2301315), (60, 2147894), (70, 1841052), (84, 1534210), (105, 1227368), (120, 1073947), (140, 920526), (168, 767105), (210, 613684), (280, 460263), (420, 306842), (840, 153421)]