20285540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1$

素因数の和:273

約数の個数: 96

約数和(自身を含む): 51287040

約数和(自身を除く): 31001500

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 23, 38, 44, 46, 55, 76, 92, 95, 110, 115, 190, 209, 211, 220, 230, 253, 380, 418, 422, 437, 460, 506, 836, 844, 874, 1012, 1045, 1055, 1265, 1748, 2090, 2110, 2185, 2321, 2530, 4009, 4180, 4220, 4370, 4642, 4807, 4853, 5060, 8018, 8740, 9284, 9614, 9706, 11605, 16036, 19228, 19412, 20045, 23210, 24035, 24265, 40090, 44099, 46420, 48070, 48530, 53383, 80180, 88198, 92207, 96140, 97060, 106766, 176396, 184414, 213532, 220495, 266915, 368828, 440990, 461035, 533830, 881980, 922070, 1014277, 1067660, 1844140, 2028554, 4057108, 5071385, 10142770, 20285540]

約数ペア:

[(1, 20285540), (2, 10142770), (4, 5071385), (5, 4057108), (10, 2028554), (11, 1844140), (19, 1067660), (20, 1014277), (22, 922070), (23, 881980), (38, 533830), (44, 461035), (46, 440990), (55, 368828), (76, 266915), (92, 220495), (95, 213532), (110, 184414), (115, 176396), (190, 106766), (209, 97060), (211, 96140), (220, 92207), (230, 88198), (253, 80180), (380, 53383), (418, 48530), (422, 48070), (437, 46420), (460, 44099), (506, 40090), (836, 24265), (844, 24035), (874, 23210), (1012, 20045), (1045, 19412), (1055, 19228), (1265, 16036), (1748, 11605), (2090, 9706), (2110, 9614), (2185, 9284), (2321, 8740), (2530, 8018), (4009, 5060), (4180, 4853), (4220, 4807), (4370, 4642)]