20839440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2801}}^1$

素因数の和:2848

約数の個数: 80

約数和(自身を含む): 66710016

約数和(自身を除く): 45870576

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 155, 186, 240, 248, 310, 372, 465, 496, 620, 744, 930, 1240, 1488, 1860, 2480, 2801, 3720, 5602, 7440, 8403, 11204, 14005, 16806, 22408, 28010, 33612, 42015, 44816, 56020, 67224, 84030, 86831, 112040, 134448, 168060, 173662, 224080, 260493, 336120, 347324, 434155, 520986, 672240, 694648, 868310, 1041972, 1302465, 1389296, 1736620, 2083944, 2604930, 3473240, 4167888, 5209860, 6946480, 10419720, 20839440]

約数ペア:

[(1, 20839440), (2, 10419720), (3, 6946480), (4, 5209860), (5, 4167888), (6, 3473240), (8, 2604930), (10, 2083944), (12, 1736620), (15, 1389296), (16, 1302465), (20, 1041972), (24, 868310), (30, 694648), (31, 672240), (40, 520986), (48, 434155), (60, 347324), (62, 336120), (80, 260493), (93, 224080), (120, 173662), (124, 168060), (155, 134448), (186, 112040), (240, 86831), (248, 84030), (310, 67224), (372, 56020), (465, 44816), (496, 42015), (620, 33612), (744, 28010), (930, 22408), (1240, 16806), (1488, 14005), (1860, 11204), (2480, 8403), (2801, 7440), (3720, 5602)]