18871408

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2699}}^1$

素因数の和:2749

約数の個数: 40

約数和(自身を含む): 40176000

約数和(自身を除く): 21304592

約数列:

[1, 2, 4, 8, 16, 19, 23, 38, 46, 76, 92, 152, 184, 304, 368, 437, 874, 1748, 2699, 3496, 5398, 6992, 10796, 21592, 43184, 51281, 62077, 102562, 124154, 205124, 248308, 410248, 496616, 820496, 993232, 1179463, 2358926, 4717852, 9435704, 18871408]

約数ペア:

[(1, 18871408), (2, 9435704), (4, 4717852), (8, 2358926), (16, 1179463), (19, 993232), (23, 820496), (38, 496616), (46, 410248), (76, 248308), (92, 205124), (152, 124154), (184, 102562), (304, 62077), (368, 51281), (437, 43184), (874, 21592), (1748, 10796), (2699, 6992), (3496, 5398)]