259120

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:133

約数の個数: 40

約数和(自身を含む): 624960

約数和(自身を除く): 365840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 79, 80, 82, 158, 164, 205, 316, 328, 395, 410, 632, 656, 790, 820, 1264, 1580, 1640, 3160, 3239, 3280, 6320, 6478, 12956, 16195, 25912, 32390, 51824, 64780, 129560, 259120]

約数ペア:

[(1, 259120), (2, 129560), (4, 64780), (5, 51824), (8, 32390), (10, 25912), (16, 16195), (20, 12956), (40, 6478), (41, 6320), (79, 3280), (80, 3239), (82, 3160), (158, 1640), (164, 1580), (205, 1264), (316, 820), (328, 790), (395, 656), (410, 632)]