18219740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{11831}}^1$

素因数の和:11858

約数の個数: 48

約数和(自身を含む): 47706624

約数和(自身を除く): 29486884

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 11831, 23662, 47324, 59155, 82817, 118310, 130141, 165634, 236620, 260282, 331268, 414085, 520564, 650705, 828170, 910987, 1301410, 1656340, 1821974, 2602820, 3643948, 4554935, 9109870, 18219740]

約数ペア:

[(1, 18219740), (2, 9109870), (4, 4554935), (5, 3643948), (7, 2602820), (10, 1821974), (11, 1656340), (14, 1301410), (20, 910987), (22, 828170), (28, 650705), (35, 520564), (44, 414085), (55, 331268), (70, 260282), (77, 236620), (110, 165634), (140, 130141), (154, 118310), (220, 82817), (308, 59155), (385, 47324), (770, 23662), (1540, 11831)]