18879520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{631}}^1$

素因数の和:674

約数の個数: 96

約数和(自身を含む): 51601536

約数和(自身を除く): 32722016

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 32, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 160, 170, 176, 187, 220, 272, 340, 352, 374, 440, 544, 631, 680, 748, 880, 935, 1262, 1360, 1496, 1760, 1870, 2524, 2720, 2992, 3155, 3740, 5048, 5984, 6310, 6941, 7480, 10096, 10727, 12620, 13882, 14960, 20192, 21454, 25240, 27764, 29920, 34705, 42908, 50480, 53635, 55528, 69410, 85816, 100960, 107270, 111056, 117997, 138820, 171632, 214540, 222112, 235994, 277640, 343264, 429080, 471988, 555280, 589985, 858160, 943976, 1110560, 1179970, 1716320, 1887952, 2359940, 3775904, 4719880, 9439760, 18879520]

約数ペア:

[(1, 18879520), (2, 9439760), (4, 4719880), (5, 3775904), (8, 2359940), (10, 1887952), (11, 1716320), (16, 1179970), (17, 1110560), (20, 943976), (22, 858160), (32, 589985), (34, 555280), (40, 471988), (44, 429080), (55, 343264), (68, 277640), (80, 235994), (85, 222112), (88, 214540), (110, 171632), (136, 138820), (160, 117997), (170, 111056), (176, 107270), (187, 100960), (220, 85816), (272, 69410), (340, 55528), (352, 53635), (374, 50480), (440, 42908), (544, 34705), (631, 29920), (680, 27764), (748, 25240), (880, 21454), (935, 20192), (1262, 14960), (1360, 13882), (1496, 12620), (1760, 10727), (1870, 10096), (2524, 7480), (2720, 6941), (2992, 6310), (3155, 5984), (3740, 5048)]