18851680

素因数分解:

$2^5\times 5^1\times {\mathrm{59}}^1\times {\mathrm{1997}}^1$

素因数の和:2071

約数の個数: 48

約数和(自身を含む): 45314640

約数和(自身を除く): 26462960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 80, 118, 160, 236, 295, 472, 590, 944, 1180, 1888, 1997, 2360, 3994, 4720, 7988, 9440, 9985, 15976, 19970, 31952, 39940, 63904, 79880, 117823, 159760, 235646, 319520, 471292, 589115, 942584, 1178230, 1885168, 2356460, 3770336, 4712920, 9425840, 18851680]

約数ペア:

[(1, 18851680), (2, 9425840), (4, 4712920), (5, 3770336), (8, 2356460), (10, 1885168), (16, 1178230), (20, 942584), (32, 589115), (40, 471292), (59, 319520), (80, 235646), (118, 159760), (160, 117823), (236, 79880), (295, 63904), (472, 39940), (590, 31952), (944, 19970), (1180, 15976), (1888, 9985), (1997, 9440), (2360, 7988), (3994, 4720)]