19878398

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:284

約数の個数: 32

約数和(自身を含む): 32421600

約数和(自身を除く): 12543202

約数列:

[1, 2, 29, 37, 58, 59, 74, 118, 157, 314, 1073, 1711, 2146, 2183, 3422, 4366, 4553, 5809, 9106, 9263, 11618, 18526, 63307, 126614, 168461, 268627, 336922, 342731, 537254, 685462, 9939199, 19878398]

約数ペア:

[(1, 19878398), (2, 9939199), (29, 685462), (37, 537254), (58, 342731), (59, 336922), (74, 268627), (118, 168461), (157, 126614), (314, 63307), (1073, 18526), (1711, 11618), (2146, 9263), (2183, 9106), (3422, 5809), (4366, 4553)]