20408280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8951}}^1$

素因数の和:8984

約数の個数: 64

約数和(自身を含む): 64454400

約数和(自身を除く): 44046120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 114, 120, 152, 190, 228, 285, 380, 456, 570, 760, 1140, 2280, 8951, 17902, 26853, 35804, 44755, 53706, 71608, 89510, 107412, 134265, 170069, 179020, 214824, 268530, 340138, 358040, 510207, 537060, 680276, 850345, 1020414, 1074120, 1360552, 1700690, 2040828, 2551035, 3401380, 4081656, 5102070, 6802760, 10204140, 20408280]

約数ペア:

[(1, 20408280), (2, 10204140), (3, 6802760), (4, 5102070), (5, 4081656), (6, 3401380), (8, 2551035), (10, 2040828), (12, 1700690), (15, 1360552), (19, 1074120), (20, 1020414), (24, 850345), (30, 680276), (38, 537060), (40, 510207), (57, 358040), (60, 340138), (76, 268530), (95, 214824), (114, 179020), (120, 170069), (152, 134265), (190, 107412), (228, 89510), (285, 71608), (380, 53706), (456, 44755), (570, 35804), (760, 26853), (1140, 17902), (2280, 8951)]