20219992

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{977}}^1$

素因数の和:1195

約数の個数: 32

約数和(自身を含む): 41076000

約数和(自身を除く): 20856008

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 199, 398, 796, 977, 1592, 1954, 2587, 3908, 5174, 7816, 10348, 12701, 20696, 25402, 50804, 101608, 194423, 388846, 777692, 1555384, 2527499, 5054998, 10109996, 20219992]

約数ペア:

[(1, 20219992), (2, 10109996), (4, 5054998), (8, 2527499), (13, 1555384), (26, 777692), (52, 388846), (104, 194423), (199, 101608), (398, 50804), (796, 25402), (977, 20696), (1592, 12701), (1954, 10348), (2587, 7816), (3908, 5174)]