20439320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:177

約数の個数: 96

約数和(自身を含む): 52284960

約数和(自身を除く): 31845640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 103, 110, 121, 164, 205, 206, 220, 242, 328, 410, 412, 440, 451, 484, 515, 605, 820, 824, 902, 968, 1030, 1133, 1210, 1640, 1804, 2060, 2255, 2266, 2420, 3608, 4120, 4223, 4510, 4532, 4840, 4961, 5665, 8446, 9020, 9064, 9922, 11330, 12463, 16892, 18040, 19844, 21115, 22660, 24805, 24926, 33784, 39688, 42230, 45320, 46453, 49610, 49852, 62315, 84460, 92906, 99220, 99704, 124630, 168920, 185812, 198440, 232265, 249260, 371624, 464530, 498520, 510983, 929060, 1021966, 1858120, 2043932, 2554915, 4087864, 5109830, 10219660, 20439320]

約数ペア:

[(1, 20439320), (2, 10219660), (4, 5109830), (5, 4087864), (8, 2554915), (10, 2043932), (11, 1858120), (20, 1021966), (22, 929060), (40, 510983), (41, 498520), (44, 464530), (55, 371624), (82, 249260), (88, 232265), (103, 198440), (110, 185812), (121, 168920), (164, 124630), (205, 99704), (206, 99220), (220, 92906), (242, 84460), (328, 62315), (410, 49852), (412, 49610), (440, 46453), (451, 45320), (484, 42230), (515, 39688), (605, 33784), (820, 24926), (824, 24805), (902, 22660), (968, 21115), (1030, 19844), (1133, 18040), (1210, 16892), (1640, 12463), (1804, 11330), (2060, 9922), (2255, 9064), (2266, 9020), (2420, 8446), (3608, 5665), (4120, 4961), (4223, 4840), (4510, 4532)]