31111520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1607}}^1$

素因数の和:1644

約数の個数: 72

約数和(自身を含む): 80840592

約数和(自身を除く): 49729072

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1210, 1607, 1760, 1936, 2420, 3214, 3872, 4840, 6428, 8035, 9680, 12856, 16070, 17677, 19360, 25712, 32140, 35354, 51424, 64280, 70708, 88385, 128560, 141416, 176770, 194447, 257120, 282832, 353540, 388894, 565664, 707080, 777788, 972235, 1414160, 1555576, 1944470, 2828320, 3111152, 3888940, 6222304, 7777880, 15555760, 31111520]

約数ペア:

[(1, 31111520), (2, 15555760), (4, 7777880), (5, 6222304), (8, 3888940), (10, 3111152), (11, 2828320), (16, 1944470), (20, 1555576), (22, 1414160), (32, 972235), (40, 777788), (44, 707080), (55, 565664), (80, 388894), (88, 353540), (110, 282832), (121, 257120), (160, 194447), (176, 176770), (220, 141416), (242, 128560), (352, 88385), (440, 70708), (484, 64280), (605, 51424), (880, 35354), (968, 32140), (1210, 25712), (1607, 19360), (1760, 17677), (1936, 16070), (2420, 12856), (3214, 9680), (3872, 8035), (4840, 6428)]