20788740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{2357}}^1$

素因数の和:2386

約数の個数: 108

約数和(自身を含む): 73385676

約数和(自身を除く): 52596936

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2357, 2940, 4410, 4714, 7071, 8820, 9428, 11785, 14142, 16499, 21213, 23570, 28284, 32998, 35355, 42426, 47140, 49497, 65996, 70710, 82495, 84852, 98994, 106065, 115493, 141420, 148491, 164990, 197988, 212130, 230986, 247485, 296982, 329980, 346479, 424260, 461972, 494970, 577465, 593964, 692958, 742455, 989940, 1039437, 1154930, 1385916, 1484910, 1732395, 2078874, 2309860, 2969820, 3464790, 4157748, 5197185, 6929580, 10394370, 20788740]

約数ペア:

[(1, 20788740), (2, 10394370), (3, 6929580), (4, 5197185), (5, 4157748), (6, 3464790), (7, 2969820), (9, 2309860), (10, 2078874), (12, 1732395), (14, 1484910), (15, 1385916), (18, 1154930), (20, 1039437), (21, 989940), (28, 742455), (30, 692958), (35, 593964), (36, 577465), (42, 494970), (45, 461972), (49, 424260), (60, 346479), (63, 329980), (70, 296982), (84, 247485), (90, 230986), (98, 212130), (105, 197988), (126, 164990), (140, 148491), (147, 141420), (180, 115493), (196, 106065), (210, 98994), (245, 84852), (252, 82495), (294, 70710), (315, 65996), (420, 49497), (441, 47140), (490, 42426), (588, 35355), (630, 32998), (735, 28284), (882, 23570), (980, 21213), (1260, 16499), (1470, 14142), (1764, 11785), (2205, 9428), (2357, 8820), (2940, 7071), (4410, 4714)]