1813840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:140

約数の個数: 80

約数和(自身を含む): 4999680

約数和(自身を除く): 3185840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 56, 70, 79, 80, 82, 112, 140, 158, 164, 205, 280, 287, 316, 328, 395, 410, 553, 560, 574, 632, 656, 790, 820, 1106, 1148, 1264, 1435, 1580, 1640, 2212, 2296, 2765, 2870, 3160, 3239, 3280, 4424, 4592, 5530, 5740, 6320, 6478, 8848, 11060, 11480, 12956, 16195, 22120, 22673, 22960, 25912, 32390, 44240, 45346, 51824, 64780, 90692, 113365, 129560, 181384, 226730, 259120, 362768, 453460, 906920, 1813840]

約数ペア:

[(1, 1813840), (2, 906920), (4, 453460), (5, 362768), (7, 259120), (8, 226730), (10, 181384), (14, 129560), (16, 113365), (20, 90692), (28, 64780), (35, 51824), (40, 45346), (41, 44240), (56, 32390), (70, 25912), (79, 22960), (80, 22673), (82, 22120), (112, 16195), (140, 12956), (158, 11480), (164, 11060), (205, 8848), (280, 6478), (287, 6320), (316, 5740), (328, 5530), (395, 4592), (410, 4424), (553, 3280), (560, 3239), (574, 3160), (632, 2870), (656, 2765), (790, 2296), (820, 2212), (1106, 1640), (1148, 1580), (1264, 1435)]