19939440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{331}}^1$

素因数の和:598

約数の個数: 80

約数和(自身を含む): 62246016

約数和(自身を除く): 42306576

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 251, 331, 502, 662, 753, 993, 1004, 1255, 1324, 1506, 1655, 1986, 2008, 2510, 2648, 3012, 3310, 3765, 3972, 4016, 4965, 5020, 5296, 6024, 6620, 7530, 7944, 9930, 10040, 12048, 13240, 15060, 15888, 19860, 20080, 26480, 30120, 39720, 60240, 79440, 83081, 166162, 249243, 332324, 415405, 498486, 664648, 830810, 996972, 1246215, 1329296, 1661620, 1993944, 2492430, 3323240, 3987888, 4984860, 6646480, 9969720, 19939440]

約数ペア:

[(1, 19939440), (2, 9969720), (3, 6646480), (4, 4984860), (5, 3987888), (6, 3323240), (8, 2492430), (10, 1993944), (12, 1661620), (15, 1329296), (16, 1246215), (20, 996972), (24, 830810), (30, 664648), (40, 498486), (48, 415405), (60, 332324), (80, 249243), (120, 166162), (240, 83081), (251, 79440), (331, 60240), (502, 39720), (662, 30120), (753, 26480), (993, 20080), (1004, 19860), (1255, 15888), (1324, 15060), (1506, 13240), (1655, 12048), (1986, 10040), (2008, 9930), (2510, 7944), (2648, 7530), (3012, 6620), (3310, 6024), (3765, 5296), (3972, 5020), (4016, 4965)]