1638800360

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{677}}^1\times {\mathrm{829}}^1$

素因数の和:1590

約数の個数: 64

約数和(自身を含む): 3747848400

約数和(自身を除く): 2109048040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 677, 730, 829, 1354, 1460, 1658, 2708, 2920, 3316, 3385, 4145, 5416, 6632, 6770, 8290, 13540, 16580, 27080, 33160, 49421, 60517, 98842, 121034, 197684, 242068, 247105, 302585, 395368, 484136, 494210, 561233, 605170, 988420, 1122466, 1210340, 1976840, 2244932, 2420680, 2806165, 4489864, 5612330, 11224660, 22449320, 40970009, 81940018, 163880036, 204850045, 327760072, 409700090, 819400180, 1638800360]

約数ペア:

[(1, 1638800360), (2, 819400180), (4, 409700090), (5, 327760072), (8, 204850045), (10, 163880036), (20, 81940018), (40, 40970009), (73, 22449320), (146, 11224660), (292, 5612330), (365, 4489864), (584, 2806165), (677, 2420680), (730, 2244932), (829, 1976840), (1354, 1210340), (1460, 1122466), (1658, 988420), (2708, 605170), (2920, 561233), (3316, 494210), (3385, 484136), (4145, 395368), (5416, 302585), (6632, 247105), (6770, 242068), (8290, 197684), (13540, 121034), (16580, 98842), (27080, 60517), (33160, 49421)]