18468520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{929}}^1$

素因数の和:1018

約数の個数: 64

約数和(自身を含む): 48211200

約数和(自身を除く): 29742680

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, 929, 994, 1420, 1858, 1988, 2485, 2840, 3716, 3976, 4645, 4970, 6503, 7432, 9290, 9940, 13006, 18580, 19880, 26012, 32515, 37160, 52024, 65030, 65959, 130060, 131918, 260120, 263836, 329795, 461713, 527672, 659590, 923426, 1319180, 1846852, 2308565, 2638360, 3693704, 4617130, 9234260, 18468520]

約数ペア:

[(1, 18468520), (2, 9234260), (4, 4617130), (5, 3693704), (7, 2638360), (8, 2308565), (10, 1846852), (14, 1319180), (20, 923426), (28, 659590), (35, 527672), (40, 461713), (56, 329795), (70, 263836), (71, 260120), (140, 131918), (142, 130060), (280, 65959), (284, 65030), (355, 52024), (497, 37160), (568, 32515), (710, 26012), (929, 19880), (994, 18580), (1420, 13006), (1858, 9940), (1988, 9290), (2485, 7432), (2840, 6503), (3716, 4970), (3976, 4645)]