21018780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5077}}^1$

素因数の和:5115

約数の個数: 72

約数和(自身を含む): 66542112

約数和(自身を除く): 45523332

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 5077, 10154, 15231, 20308, 25385, 30462, 45693, 50770, 60924, 76155, 91386, 101540, 116771, 152310, 182772, 228465, 233542, 304620, 350313, 456930, 467084, 583855, 700626, 913860, 1050939, 1167710, 1401252, 1751565, 2101878, 2335420, 3503130, 4203756, 5254695, 7006260, 10509390, 21018780]

約数ペア:

[(1, 21018780), (2, 10509390), (3, 7006260), (4, 5254695), (5, 4203756), (6, 3503130), (9, 2335420), (10, 2101878), (12, 1751565), (15, 1401252), (18, 1167710), (20, 1050939), (23, 913860), (30, 700626), (36, 583855), (45, 467084), (46, 456930), (60, 350313), (69, 304620), (90, 233542), (92, 228465), (115, 182772), (138, 152310), (180, 116771), (207, 101540), (230, 91386), (276, 76155), (345, 60924), (414, 50770), (460, 45693), (690, 30462), (828, 25385), (1035, 20308), (1380, 15231), (2070, 10154), (4140, 5077)]