18513980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{587}}^1$

素因数の和:698

約数の個数: 48

約数和(自身を含む): 41489280

約数和(自身を除く): 22975300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 83, 95, 166, 190, 332, 380, 415, 587, 830, 1174, 1577, 1660, 2348, 2935, 3154, 5870, 6308, 7885, 11153, 11740, 15770, 22306, 31540, 44612, 48721, 55765, 97442, 111530, 194884, 223060, 243605, 487210, 925699, 974420, 1851398, 3702796, 4628495, 9256990, 18513980]

約数ペア:

[(1, 18513980), (2, 9256990), (4, 4628495), (5, 3702796), (10, 1851398), (19, 974420), (20, 925699), (38, 487210), (76, 243605), (83, 223060), (95, 194884), (166, 111530), (190, 97442), (332, 55765), (380, 48721), (415, 44612), (587, 31540), (830, 22306), (1174, 15770), (1577, 11740), (1660, 11153), (2348, 7885), (2935, 6308), (3154, 5870)]