80394020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{1987}}^1$

素因数の和:2037

約数の個数: 72

約数和(自身を含む): 205066176

約数和(自身を除く): 124672156

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 289, 340, 476, 578, 595, 1156, 1190, 1445, 1987, 2023, 2380, 2890, 3974, 4046, 5780, 7948, 8092, 9935, 10115, 13909, 19870, 20230, 27818, 33779, 39740, 40460, 55636, 67558, 69545, 135116, 139090, 168895, 236453, 278180, 337790, 472906, 574243, 675580, 945812, 1148486, 1182265, 2296972, 2364530, 2871215, 4019701, 4729060, 5742430, 8039402, 11484860, 16078804, 20098505, 40197010, 80394020]

約数ペア:

[(1, 80394020), (2, 40197010), (4, 20098505), (5, 16078804), (7, 11484860), (10, 8039402), (14, 5742430), (17, 4729060), (20, 4019701), (28, 2871215), (34, 2364530), (35, 2296972), (68, 1182265), (70, 1148486), (85, 945812), (119, 675580), (140, 574243), (170, 472906), (238, 337790), (289, 278180), (340, 236453), (476, 168895), (578, 139090), (595, 135116), (1156, 69545), (1190, 67558), (1445, 55636), (1987, 40460), (2023, 39740), (2380, 33779), (2890, 27818), (3974, 20230), (4046, 19870), (5780, 13909), (7948, 10115), (8092, 9935)]