19422760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{977}}^1$

素因数の和:1066

約数の個数: 64

約数和(自身を含む): 50699520

約数和(自身を除く): 31276760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 977, 994, 1420, 1954, 1988, 2485, 2840, 3908, 3976, 4885, 4970, 6839, 7816, 9770, 9940, 13678, 19540, 19880, 27356, 34195, 39080, 54712, 68390, 69367, 136780, 138734, 273560, 277468, 346835, 485569, 554936, 693670, 971138, 1387340, 1942276, 2427845, 2774680, 3884552, 4855690, 9711380, 19422760]

約数ペア:

[(1, 19422760), (2, 9711380), (4, 4855690), (5, 3884552), (7, 2774680), (8, 2427845), (10, 1942276), (14, 1387340), (20, 971138), (28, 693670), (35, 554936), (40, 485569), (56, 346835), (70, 277468), (71, 273560), (140, 138734), (142, 136780), (280, 69367), (284, 68390), (355, 54712), (497, 39080), (568, 34195), (710, 27356), (977, 19880), (994, 19540), (1420, 13678), (1954, 9940), (1988, 9770), (2485, 7816), (2840, 6839), (3908, 4970), (3976, 4885)]