19927920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1931}}^1$

素因数の和:1990

約数の個数: 80

約数和(自身を含む): 63245952

約数和(自身を除く): 43318032

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 43, 48, 60, 80, 86, 120, 129, 172, 215, 240, 258, 344, 430, 516, 645, 688, 860, 1032, 1290, 1720, 1931, 2064, 2580, 3440, 3862, 5160, 5793, 7724, 9655, 10320, 11586, 15448, 19310, 23172, 28965, 30896, 38620, 46344, 57930, 77240, 83033, 92688, 115860, 154480, 166066, 231720, 249099, 332132, 415165, 463440, 498198, 664264, 830330, 996396, 1245495, 1328528, 1660660, 1992792, 2490990, 3321320, 3985584, 4981980, 6642640, 9963960, 19927920]

約数ペア:

[(1, 19927920), (2, 9963960), (3, 6642640), (4, 4981980), (5, 3985584), (6, 3321320), (8, 2490990), (10, 1992792), (12, 1660660), (15, 1328528), (16, 1245495), (20, 996396), (24, 830330), (30, 664264), (40, 498198), (43, 463440), (48, 415165), (60, 332132), (80, 249099), (86, 231720), (120, 166066), (129, 154480), (172, 115860), (215, 92688), (240, 83033), (258, 77240), (344, 57930), (430, 46344), (516, 38620), (645, 30896), (688, 28965), (860, 23172), (1032, 19310), (1290, 15448), (1720, 11586), (1931, 10320), (2064, 9655), (2580, 7724), (3440, 5793), (3862, 5160)]