18718980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{6367}}^1$

素因数の和:6393

約数の個数: 72

約数和(自身を含む): 60979968

約数和(自身を除く): 42260988

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 6367, 12734, 19101, 25468, 31835, 38202, 44569, 63670, 76404, 89138, 95505, 127340, 133707, 178276, 191010, 222845, 267414, 311983, 382020, 445690, 534828, 623966, 668535, 891380, 935949, 1247932, 1337070, 1559915, 1871898, 2674140, 3119830, 3743796, 4679745, 6239660, 9359490, 18718980]

約数ペア:

[(1, 18718980), (2, 9359490), (3, 6239660), (4, 4679745), (5, 3743796), (6, 3119830), (7, 2674140), (10, 1871898), (12, 1559915), (14, 1337070), (15, 1247932), (20, 935949), (21, 891380), (28, 668535), (30, 623966), (35, 534828), (42, 445690), (49, 382020), (60, 311983), (70, 267414), (84, 222845), (98, 191010), (105, 178276), (140, 133707), (147, 127340), (196, 95505), (210, 89138), (245, 76404), (294, 63670), (420, 44569), (490, 38202), (588, 31835), (735, 25468), (980, 19101), (1470, 12734), (2940, 6367)]