18995116

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 39816000

約数和(自身を除く): 20820884

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 149, 157, 203, 298, 314, 406, 596, 628, 812, 1043, 1099, 2086, 2198, 4172, 4321, 4396, 4553, 8642, 9106, 17284, 18212, 23393, 30247, 31871, 46786, 60494, 63742, 93572, 120988, 127484, 163751, 327502, 655004, 678397, 1356794, 2713588, 4748779, 9497558, 18995116]

約数ペア:

[(1, 18995116), (2, 9497558), (4, 4748779), (7, 2713588), (14, 1356794), (28, 678397), (29, 655004), (58, 327502), (116, 163751), (149, 127484), (157, 120988), (203, 93572), (298, 63742), (314, 60494), (406, 46786), (596, 31871), (628, 30247), (812, 23393), (1043, 18212), (1099, 17284), (2086, 9106), (2198, 8642), (4172, 4553), (4321, 4396)]