9901960

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 23846400

約数和(自身を除く): 13944440

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 47, 92, 94, 115, 184, 188, 229, 230, 235, 376, 458, 460, 470, 916, 920, 940, 1081, 1145, 1832, 1880, 2162, 2290, 4324, 4580, 5267, 5405, 8648, 9160, 10534, 10763, 10810, 21068, 21526, 21620, 26335, 42136, 43052, 43240, 52670, 53815, 86104, 105340, 107630, 210680, 215260, 247549, 430520, 495098, 990196, 1237745, 1980392, 2475490, 4950980, 9901960]

約数ペア:

[(1, 9901960), (2, 4950980), (4, 2475490), (5, 1980392), (8, 1237745), (10, 990196), (20, 495098), (23, 430520), (40, 247549), (46, 215260), (47, 210680), (92, 107630), (94, 105340), (115, 86104), (184, 53815), (188, 52670), (229, 43240), (230, 43052), (235, 42136), (376, 26335), (458, 21620), (460, 21526), (470, 21068), (916, 10810), (920, 10763), (940, 10534), (1081, 9160), (1145, 8648), (1832, 5405), (1880, 5267), (2162, 4580), (2290, 4324)]