18964960

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:129

約数の個数: 144

約数和(自身を含む): 54295920

約数和(自身を除く): 35330960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 41, 49, 56, 59, 70, 80, 82, 98, 112, 118, 140, 160, 164, 196, 205, 224, 236, 245, 280, 287, 295, 328, 392, 410, 413, 472, 490, 560, 574, 590, 656, 784, 820, 826, 944, 980, 1120, 1148, 1180, 1312, 1435, 1568, 1640, 1652, 1888, 1960, 2009, 2065, 2296, 2360, 2419, 2870, 2891, 3280, 3304, 3920, 4018, 4130, 4592, 4720, 4838, 5740, 5782, 6560, 6608, 7840, 8036, 8260, 9184, 9440, 9676, 10045, 11480, 11564, 12095, 13216, 14455, 16072, 16520, 16933, 19352, 20090, 22960, 23128, 24190, 28910, 32144, 33040, 33866, 38704, 40180, 45920, 46256, 48380, 57820, 64288, 66080, 67732, 77408, 80360, 84665, 92512, 96760, 115640, 118531, 135464, 160720, 169330, 193520, 231280, 237062, 270928, 321440, 338660, 387040, 462560, 474124, 541856, 592655, 677320, 948248, 1185310, 1354640, 1896496, 2370620, 2709280, 3792992, 4741240, 9482480, 18964960]

約数ペア:

[(1, 18964960), (2, 9482480), (4, 4741240), (5, 3792992), (7, 2709280), (8, 2370620), (10, 1896496), (14, 1354640), (16, 1185310), (20, 948248), (28, 677320), (32, 592655), (35, 541856), (40, 474124), (41, 462560), (49, 387040), (56, 338660), (59, 321440), (70, 270928), (80, 237062), (82, 231280), (98, 193520), (112, 169330), (118, 160720), (140, 135464), (160, 118531), (164, 115640), (196, 96760), (205, 92512), (224, 84665), (236, 80360), (245, 77408), (280, 67732), (287, 66080), (295, 64288), (328, 57820), (392, 48380), (410, 46256), (413, 45920), (472, 40180), (490, 38704), (560, 33866), (574, 33040), (590, 32144), (656, 28910), (784, 24190), (820, 23128), (826, 22960), (944, 20090), (980, 19352), (1120, 16933), (1148, 16520), (1180, 16072), (1312, 14455), (1435, 13216), (1568, 12095), (1640, 11564), (1652, 11480), (1888, 10045), (1960, 9676), (2009, 9440), (2065, 9184), (2296, 8260), (2360, 8036), (2419, 7840), (2870, 6608), (2891, 6560), (3280, 5782), (3304, 5740), (3920, 4838), (4018, 4720), (4130, 4592)]