1971220980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{661}}^1\times {\mathrm{2161}}^1$

素因数の和:2857

約数の個数: 96

約数和(自身を含む): 5770775808

約数和(自身を除く): 3799554828

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 661, 690, 1322, 1380, 1983, 2161, 2644, 3305, 3966, 4322, 6483, 6610, 7932, 8644, 9915, 10805, 12966, 13220, 15203, 19830, 21610, 25932, 30406, 32415, 39660, 43220, 45609, 49703, 60812, 64830, 76015, 91218, 99406, 129660, 149109, 152030, 182436, 198812, 228045, 248515, 298218, 304060, 456090, 497030, 596436, 745545, 912180, 994060, 1428421, 1491090, 2856842, 2982180, 4285263, 5713684, 7142105, 8570526, 14284210, 17141052, 21426315, 28568420, 32853683, 42852630, 65707366, 85705260, 98561049, 131414732, 164268415, 197122098, 328536830, 394244196, 492805245, 657073660, 985610490, 1971220980]

約数ペア:

[(1, 1971220980), (2, 985610490), (3, 657073660), (4, 492805245), (5, 394244196), (6, 328536830), (10, 197122098), (12, 164268415), (15, 131414732), (20, 98561049), (23, 85705260), (30, 65707366), (46, 42852630), (60, 32853683), (69, 28568420), (92, 21426315), (115, 17141052), (138, 14284210), (230, 8570526), (276, 7142105), (345, 5713684), (460, 4285263), (661, 2982180), (690, 2856842), (1322, 1491090), (1380, 1428421), (1983, 994060), (2161, 912180), (2644, 745545), (3305, 596436), (3966, 497030), (4322, 456090), (6483, 304060), (6610, 298218), (7932, 248515), (8644, 228045), (9915, 198812), (10805, 182436), (12966, 152030), (13220, 149109), (15203, 129660), (19830, 99406), (21610, 91218), (25932, 76015), (30406, 64830), (32415, 60812), (39660, 49703), (43220, 45609)]