19847840

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7297}}^1$

素因数の和:7329

約数の個数: 48

約数和(自身を含む): 49655592

約数和(自身を除く): 29807752

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7297, 14594, 29188, 36485, 58376, 72970, 116752, 124049, 145940, 233504, 248098, 291880, 496196, 583760, 620245, 992392, 1167520, 1240490, 1984784, 2480980, 3969568, 4961960, 9923920, 19847840]

約数ペア:

[(1, 19847840), (2, 9923920), (4, 4961960), (5, 3969568), (8, 2480980), (10, 1984784), (16, 1240490), (17, 1167520), (20, 992392), (32, 620245), (34, 583760), (40, 496196), (68, 291880), (80, 248098), (85, 233504), (136, 145940), (160, 124049), (170, 116752), (272, 72970), (340, 58376), (544, 36485), (680, 29188), (1360, 14594), (2720, 7297)]