18806768

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:425

約数の個数: 40

約数和(自身を含む): 37765440

約数和(自身を除く): 18958672

約数列:

[1, 2, 4, 8, 16, 47, 89, 94, 178, 188, 281, 356, 376, 562, 712, 752, 1124, 1424, 2248, 4183, 4496, 8366, 13207, 16732, 25009, 26414, 33464, 50018, 52828, 66928, 100036, 105656, 200072, 211312, 400144, 1175423, 2350846, 4701692, 9403384, 18806768]

約数ペア:

[(1, 18806768), (2, 9403384), (4, 4701692), (8, 2350846), (16, 1175423), (47, 400144), (89, 211312), (94, 200072), (178, 105656), (188, 100036), (281, 66928), (356, 52828), (376, 50018), (562, 33464), (712, 26414), (752, 25009), (1124, 16732), (1424, 13207), (2248, 8366), (4183, 4496)]