18672440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{311}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 44928000

約数和(自身を除く): 26255560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 79, 95, 152, 158, 190, 311, 316, 380, 395, 622, 632, 760, 790, 1244, 1501, 1555, 1580, 2488, 3002, 3110, 3160, 5909, 6004, 6220, 7505, 11818, 12008, 12440, 15010, 23636, 24569, 29545, 30020, 47272, 49138, 59090, 60040, 98276, 118180, 122845, 196552, 236360, 245690, 466811, 491380, 933622, 982760, 1867244, 2334055, 3734488, 4668110, 9336220, 18672440]

約数ペア:

[(1, 18672440), (2, 9336220), (4, 4668110), (5, 3734488), (8, 2334055), (10, 1867244), (19, 982760), (20, 933622), (38, 491380), (40, 466811), (76, 245690), (79, 236360), (95, 196552), (152, 122845), (158, 118180), (190, 98276), (311, 60040), (316, 59090), (380, 49138), (395, 47272), (622, 30020), (632, 29545), (760, 24569), (790, 23636), (1244, 15010), (1501, 12440), (1555, 12008), (1580, 11818), (2488, 7505), (3002, 6220), (3110, 6004), (3160, 5909)]