18491920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13597}}^1$

素因数の和:13627

約数の個数: 40

約数和(自身を含む): 45526104

約数和(自身を除く): 27034184

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 13597, 27194, 54388, 67985, 108776, 135970, 217552, 231149, 271940, 462298, 543880, 924596, 1087760, 1155745, 1849192, 2311490, 3698384, 4622980, 9245960, 18491920]

約数ペア:

[(1, 18491920), (2, 9245960), (4, 4622980), (5, 3698384), (8, 2311490), (10, 1849192), (16, 1155745), (17, 1087760), (20, 924596), (34, 543880), (40, 462298), (68, 271940), (80, 231149), (85, 217552), (136, 135970), (170, 108776), (272, 67985), (340, 54388), (680, 27194), (1360, 13597)]