28074780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8209}}^1$

素因数の和:8243

約数の個数: 72

約数和(自身を含む): 89653200

約数和(自身を除く): 61578420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 8209, 16418, 24627, 32836, 41045, 49254, 73881, 82090, 98508, 123135, 147762, 155971, 164180, 246270, 295524, 311942, 369405, 467913, 492540, 623884, 738810, 779855, 935826, 1403739, 1477620, 1559710, 1871652, 2339565, 2807478, 3119420, 4679130, 5614956, 7018695, 9358260, 14037390, 28074780]

約数ペア:

[(1, 28074780), (2, 14037390), (3, 9358260), (4, 7018695), (5, 5614956), (6, 4679130), (9, 3119420), (10, 2807478), (12, 2339565), (15, 1871652), (18, 1559710), (19, 1477620), (20, 1403739), (30, 935826), (36, 779855), (38, 738810), (45, 623884), (57, 492540), (60, 467913), (76, 369405), (90, 311942), (95, 295524), (114, 246270), (171, 164180), (180, 155971), (190, 147762), (228, 123135), (285, 98508), (342, 82090), (380, 73881), (570, 49254), (684, 41045), (855, 32836), (1140, 24627), (1710, 16418), (3420, 8209)]