21356504

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{1187}}^1$

素因数の和:1379

約数の個数: 32

約数和(自身を含む): 43409520

約数和(自身を除く): 22053016

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 173, 346, 692, 1187, 1384, 2249, 2374, 4498, 4748, 8996, 9496, 15431, 17992, 30862, 61724, 123448, 205351, 410702, 821404, 1642808, 2669563, 5339126, 10678252, 21356504]

約数ペア:

[(1, 21356504), (2, 10678252), (4, 5339126), (8, 2669563), (13, 1642808), (26, 821404), (52, 410702), (104, 205351), (173, 123448), (346, 61724), (692, 30862), (1187, 17992), (1384, 15431), (2249, 9496), (2374, 8996), (4498, 4748)]