20642270

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:281

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 22903330

約数列:

[1, 2, 5, 10, 11, 22, 23, 41, 46, 55, 82, 110, 115, 199, 205, 230, 253, 398, 410, 451, 506, 902, 943, 995, 1265, 1886, 1990, 2189, 2255, 2530, 4378, 4510, 4577, 4715, 8159, 9154, 9430, 10373, 10945, 16318, 20746, 21890, 22885, 40795, 45770, 50347, 51865, 81590, 89749, 100694, 103730, 179498, 187657, 251735, 375314, 448745, 503470, 897490, 938285, 1876570, 2064227, 4128454, 10321135, 20642270]

約数ペア:

[(1, 20642270), (2, 10321135), (5, 4128454), (10, 2064227), (11, 1876570), (22, 938285), (23, 897490), (41, 503470), (46, 448745), (55, 375314), (82, 251735), (110, 187657), (115, 179498), (199, 103730), (205, 100694), (230, 89749), (253, 81590), (398, 51865), (410, 50347), (451, 45770), (506, 40795), (902, 22885), (943, 21890), (995, 20746), (1265, 16318), (1886, 10945), (1990, 10373), (2189, 9430), (2255, 9154), (2530, 8159), (4378, 4715), (4510, 4577)]