18791968

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{227}}^1$

素因数の和:449

約数の個数: 48

約数和(自身を含む): 40219200

約数和(自身を除く): 21427232

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 199, 208, 227, 398, 416, 454, 796, 908, 1592, 1816, 2587, 2951, 3184, 3632, 5174, 5902, 6368, 7264, 10348, 11804, 20696, 23608, 41392, 45173, 47216, 82784, 90346, 94432, 180692, 361384, 587249, 722768, 1174498, 1445536, 2348996, 4697992, 9395984, 18791968]

約数ペア:

[(1, 18791968), (2, 9395984), (4, 4697992), (8, 2348996), (13, 1445536), (16, 1174498), (26, 722768), (32, 587249), (52, 361384), (104, 180692), (199, 94432), (208, 90346), (227, 82784), (398, 47216), (416, 45173), (454, 41392), (796, 23608), (908, 20696), (1592, 11804), (1816, 10348), (2587, 7264), (2951, 6368), (3184, 5902), (3632, 5174)]