20159580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{6857}}^1$

素因数の和:6883

約数の個数: 72

約数和(自身を含む): 65672208

約数和(自身を除く): 45512628

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, 6857, 13714, 20571, 27428, 34285, 41142, 47999, 68570, 82284, 95998, 102855, 137140, 143997, 191996, 205710, 239995, 287994, 335993, 411420, 479990, 575988, 671986, 719985, 959980, 1007979, 1343972, 1439970, 1679965, 2015958, 2879940, 3359930, 4031916, 5039895, 6719860, 10079790, 20159580]

約数ペア:

[(1, 20159580), (2, 10079790), (3, 6719860), (4, 5039895), (5, 4031916), (6, 3359930), (7, 2879940), (10, 2015958), (12, 1679965), (14, 1439970), (15, 1343972), (20, 1007979), (21, 959980), (28, 719985), (30, 671986), (35, 575988), (42, 479990), (49, 411420), (60, 335993), (70, 287994), (84, 239995), (98, 205710), (105, 191996), (140, 143997), (147, 137140), (196, 102855), (210, 95998), (245, 82284), (294, 68570), (420, 47999), (490, 41142), (588, 34285), (735, 27428), (980, 20571), (1470, 13714), (2940, 6857)]