20720460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1753}}^1$

素因数の和:1962

約数の個数: 48

約数和(自身を含む): 58345056

約数和(自身を除く): 37624596

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 197, 394, 591, 788, 985, 1182, 1753, 1970, 2364, 2955, 3506, 3940, 5259, 5910, 7012, 8765, 10518, 11820, 17530, 21036, 26295, 35060, 52590, 105180, 345341, 690682, 1036023, 1381364, 1726705, 2072046, 3453410, 4144092, 5180115, 6906820, 10360230, 20720460]

約数ペア:

[(1, 20720460), (2, 10360230), (3, 6906820), (4, 5180115), (5, 4144092), (6, 3453410), (10, 2072046), (12, 1726705), (15, 1381364), (20, 1036023), (30, 690682), (60, 345341), (197, 105180), (394, 52590), (591, 35060), (788, 26295), (985, 21036), (1182, 17530), (1753, 11820), (1970, 10518), (2364, 8765), (2955, 7012), (3506, 5910), (3940, 5259)]