389962880

素因数分解:

$2^7\times 5^1\times {\mathrm{157}}^1\times {\mathrm{3881}}^1$

素因数の和:4057

約数の個数: 64

約数和(自身を含む): 938434680

約数和(自身を除く): 548471800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 314, 320, 628, 640, 785, 1256, 1570, 2512, 3140, 3881, 5024, 6280, 7762, 10048, 12560, 15524, 19405, 20096, 25120, 31048, 38810, 50240, 62096, 77620, 100480, 124192, 155240, 248384, 310480, 496768, 609317, 620960, 1218634, 1241920, 2437268, 2483840, 3046585, 4874536, 6093170, 9749072, 12186340, 19498144, 24372680, 38996288, 48745360, 77992576, 97490720, 194981440, 389962880]

約数ペア:

[(1, 389962880), (2, 194981440), (4, 97490720), (5, 77992576), (8, 48745360), (10, 38996288), (16, 24372680), (20, 19498144), (32, 12186340), (40, 9749072), (64, 6093170), (80, 4874536), (128, 3046585), (157, 2483840), (160, 2437268), (314, 1241920), (320, 1218634), (628, 620960), (640, 609317), (785, 496768), (1256, 310480), (1570, 248384), (2512, 155240), (3140, 124192), (3881, 100480), (5024, 77620), (6280, 62096), (7762, 50240), (10048, 38810), (12560, 31048), (15524, 25120), (19405, 20096)]