18613712

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{821}}^1$

素因数の和:951

約数の個数: 40

約数和(自身を含む): 39242280

約数和(自身を除く): 20628568

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 109, 208, 218, 436, 821, 872, 1417, 1642, 1744, 2834, 3284, 5668, 6568, 10673, 11336, 13136, 21346, 22672, 42692, 85384, 89489, 170768, 178978, 357956, 715912, 1163357, 1431824, 2326714, 4653428, 9306856, 18613712]

約数ペア:

[(1, 18613712), (2, 9306856), (4, 4653428), (8, 2326714), (13, 1431824), (16, 1163357), (26, 715912), (52, 357956), (104, 178978), (109, 170768), (208, 89489), (218, 85384), (436, 42692), (821, 22672), (872, 21346), (1417, 13136), (1642, 11336), (1744, 10673), (2834, 6568), (3284, 5668)]