21545810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:124

約数の個数: 96

約数和(自身を含む): 49014720

約数和(自身を除く): 27468910

約数列:

[1, 2, 5, 10, 11, 13, 19, 22, 26, 38, 55, 61, 65, 95, 110, 122, 130, 143, 169, 190, 209, 247, 286, 305, 338, 418, 494, 610, 671, 715, 793, 845, 1045, 1159, 1235, 1342, 1430, 1586, 1690, 1859, 2090, 2318, 2470, 2717, 3211, 3355, 3718, 3965, 5434, 5795, 6422, 6710, 7930, 8723, 9295, 10309, 11590, 12749, 13585, 15067, 16055, 17446, 18590, 20618, 25498, 27170, 30134, 32110, 35321, 43615, 51545, 63745, 70642, 75335, 87230, 103090, 113399, 127490, 150670, 165737, 176605, 195871, 226798, 331474, 353210, 391742, 566995, 828685, 979355, 1133990, 1657370, 1958710, 2154581, 4309162, 10772905, 21545810]

約数ペア:

[(1, 21545810), (2, 10772905), (5, 4309162), (10, 2154581), (11, 1958710), (13, 1657370), (19, 1133990), (22, 979355), (26, 828685), (38, 566995), (55, 391742), (61, 353210), (65, 331474), (95, 226798), (110, 195871), (122, 176605), (130, 165737), (143, 150670), (169, 127490), (190, 113399), (209, 103090), (247, 87230), (286, 75335), (305, 70642), (338, 63745), (418, 51545), (494, 43615), (610, 35321), (671, 32110), (715, 30134), (793, 27170), (845, 25498), (1045, 20618), (1159, 18590), (1235, 17446), (1342, 16055), (1430, 15067), (1586, 13585), (1690, 12749), (1859, 11590), (2090, 10309), (2318, 9295), (2470, 8723), (2717, 7930), (3211, 6710), (3355, 6422), (3718, 5795), (3965, 5434)]