19878508

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{199}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 40219200

約数和(自身を除く): 20340692

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 113, 199, 221, 226, 398, 442, 452, 796, 884, 1469, 1921, 2587, 2938, 3383, 3842, 5174, 5876, 6766, 7684, 10348, 13532, 22487, 24973, 43979, 44974, 49946, 87958, 89948, 99892, 175916, 292331, 382279, 584662, 764558, 1169324, 1529116, 4969627, 9939254, 19878508]

約数ペア:

[(1, 19878508), (2, 9939254), (4, 4969627), (13, 1529116), (17, 1169324), (26, 764558), (34, 584662), (52, 382279), (68, 292331), (113, 175916), (199, 99892), (221, 89948), (226, 87958), (398, 49946), (442, 44974), (452, 43979), (796, 24973), (884, 22487), (1469, 13532), (1921, 10348), (2587, 7684), (2938, 6766), (3383, 5876), (3842, 5174)]