18591860

素因数分解:

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

素因数の和:177

約数の個数: 72

約数和(自身を含む): 46314240

約数和(自身を除く): 27722380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 79, 82, 140, 158, 164, 205, 287, 316, 395, 410, 553, 574, 790, 820, 1106, 1148, 1435, 1580, 1681, 2212, 2765, 2870, 3239, 3362, 5530, 5740, 6478, 6724, 8405, 11060, 11767, 12956, 16195, 16810, 22673, 23534, 32390, 33620, 45346, 47068, 58835, 64780, 90692, 113365, 117670, 132799, 226730, 235340, 265598, 453460, 531196, 663995, 929593, 1327990, 1859186, 2655980, 3718372, 4647965, 9295930, 18591860]

約数ペア:

[(1, 18591860), (2, 9295930), (4, 4647965), (5, 3718372), (7, 2655980), (10, 1859186), (14, 1327990), (20, 929593), (28, 663995), (35, 531196), (41, 453460), (70, 265598), (79, 235340), (82, 226730), (140, 132799), (158, 117670), (164, 113365), (205, 90692), (287, 64780), (316, 58835), (395, 47068), (410, 45346), (553, 33620), (574, 32390), (790, 23534), (820, 22673), (1106, 16810), (1148, 16195), (1435, 12956), (1580, 11767), (1681, 11060), (2212, 8405), (2765, 6724), (2870, 6478), (3239, 5740), (3362, 5530)]