18997872

素因数分解:

$2^4\times 3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{563}}^1$

素因数の和:630

約数の個数: 80

約数和(自身を含む): 53151360

約数和(自身を除く): 34153488

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 19, 24, 37, 38, 48, 57, 74, 76, 111, 114, 148, 152, 222, 228, 296, 304, 444, 456, 563, 592, 703, 888, 912, 1126, 1406, 1689, 1776, 2109, 2252, 2812, 3378, 4218, 4504, 5624, 6756, 8436, 9008, 10697, 11248, 13512, 16872, 20831, 21394, 27024, 32091, 33744, 41662, 42788, 62493, 64182, 83324, 85576, 124986, 128364, 166648, 171152, 249972, 256728, 333296, 395789, 499944, 513456, 791578, 999888, 1187367, 1583156, 2374734, 3166312, 4749468, 6332624, 9498936, 18997872]

約数ペア:

[(1, 18997872), (2, 9498936), (3, 6332624), (4, 4749468), (6, 3166312), (8, 2374734), (12, 1583156), (16, 1187367), (19, 999888), (24, 791578), (37, 513456), (38, 499944), (48, 395789), (57, 333296), (74, 256728), (76, 249972), (111, 171152), (114, 166648), (148, 128364), (152, 124986), (222, 85576), (228, 83324), (296, 64182), (304, 62493), (444, 42788), (456, 41662), (563, 33744), (592, 32091), (703, 27024), (888, 21394), (912, 20831), (1126, 16872), (1406, 13512), (1689, 11248), (1776, 10697), (2109, 9008), (2252, 8436), (2812, 6756), (3378, 5624), (4218, 4504)]