20628120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{397}}^1\times {\mathrm{433}}^1$

素因数の和:844

約数の個数: 64

約数和(自身を含む): 62183520

約数和(自身を除く): 41555400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 397, 433, 794, 866, 1191, 1299, 1588, 1732, 1985, 2165, 2382, 2598, 3176, 3464, 3970, 4330, 4764, 5196, 5955, 6495, 7940, 8660, 9528, 10392, 11910, 12990, 15880, 17320, 23820, 25980, 47640, 51960, 171901, 343802, 515703, 687604, 859505, 1031406, 1375208, 1719010, 2062812, 2578515, 3438020, 4125624, 5157030, 6876040, 10314060, 20628120]

約数ペア:

[(1, 20628120), (2, 10314060), (3, 6876040), (4, 5157030), (5, 4125624), (6, 3438020), (8, 2578515), (10, 2062812), (12, 1719010), (15, 1375208), (20, 1031406), (24, 859505), (30, 687604), (40, 515703), (60, 343802), (120, 171901), (397, 51960), (433, 47640), (794, 25980), (866, 23820), (1191, 17320), (1299, 15880), (1588, 12990), (1732, 11910), (1985, 10392), (2165, 9528), (2382, 8660), (2598, 7940), (3176, 6495), (3464, 5955), (3970, 5196), (4330, 4764)]