18982480

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:125

約数の個数: 120

約数和(自身を含む): 50762376

約数和(自身を除く): 31779896

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 37, 40, 44, 53, 55, 74, 80, 88, 106, 110, 121, 148, 176, 185, 212, 220, 242, 265, 296, 370, 407, 424, 440, 484, 530, 583, 592, 605, 740, 814, 848, 880, 968, 1060, 1166, 1210, 1480, 1628, 1936, 1961, 2035, 2120, 2332, 2420, 2915, 2960, 3256, 3922, 4070, 4240, 4477, 4664, 4840, 5830, 6413, 6512, 7844, 8140, 8954, 9328, 9680, 9805, 11660, 12826, 15688, 16280, 17908, 19610, 21571, 22385, 23320, 25652, 31376, 32065, 32560, 35816, 39220, 43142, 44770, 46640, 51304, 64130, 71632, 78440, 86284, 89540, 102608, 107855, 128260, 156880, 172568, 179080, 215710, 237281, 256520, 345136, 358160, 431420, 474562, 513040, 862840, 949124, 1186405, 1725680, 1898248, 2372810, 3796496, 4745620, 9491240, 18982480]

約数ペア:

[(1, 18982480), (2, 9491240), (4, 4745620), (5, 3796496), (8, 2372810), (10, 1898248), (11, 1725680), (16, 1186405), (20, 949124), (22, 862840), (37, 513040), (40, 474562), (44, 431420), (53, 358160), (55, 345136), (74, 256520), (80, 237281), (88, 215710), (106, 179080), (110, 172568), (121, 156880), (148, 128260), (176, 107855), (185, 102608), (212, 89540), (220, 86284), (242, 78440), (265, 71632), (296, 64130), (370, 51304), (407, 46640), (424, 44770), (440, 43142), (484, 39220), (530, 35816), (583, 32560), (592, 32065), (605, 31376), (740, 25652), (814, 23320), (848, 22385), (880, 21571), (968, 19610), (1060, 17908), (1166, 16280), (1210, 15688), (1480, 12826), (1628, 11660), (1936, 9805), (1961, 9680), (2035, 9328), (2120, 8954), (2332, 8140), (2420, 7844), (2915, 6512), (2960, 6413), (3256, 5830), (3922, 4840), (4070, 4664), (4240, 4477)]