20626920

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1$

素因数の和:360

約数の個数: 128

約数和(自身を含む): 69984000

約数和(自身を除く): 49357080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 71, 72, 90, 108, 120, 135, 142, 180, 213, 216, 269, 270, 284, 355, 360, 426, 538, 540, 568, 639, 710, 807, 852, 1065, 1076, 1080, 1278, 1345, 1420, 1614, 1704, 1917, 2130, 2152, 2421, 2556, 2690, 2840, 3195, 3228, 3834, 4035, 4260, 4842, 5112, 5380, 6390, 6456, 7263, 7668, 8070, 8520, 9585, 9684, 10760, 12105, 12780, 14526, 15336, 16140, 19099, 19170, 19368, 24210, 25560, 29052, 32280, 36315, 38198, 38340, 48420, 57297, 58104, 72630, 76396, 76680, 95495, 96840, 114594, 145260, 152792, 171891, 190990, 229188, 286485, 290520, 343782, 381980, 458376, 515673, 572970, 687564, 763960, 859455, 1031346, 1145940, 1375128, 1718910, 2062692, 2291880, 2578365, 3437820, 4125384, 5156730, 6875640, 10313460, 20626920]

約数ペア:

[(1, 20626920), (2, 10313460), (3, 6875640), (4, 5156730), (5, 4125384), (6, 3437820), (8, 2578365), (9, 2291880), (10, 2062692), (12, 1718910), (15, 1375128), (18, 1145940), (20, 1031346), (24, 859455), (27, 763960), (30, 687564), (36, 572970), (40, 515673), (45, 458376), (54, 381980), (60, 343782), (71, 290520), (72, 286485), (90, 229188), (108, 190990), (120, 171891), (135, 152792), (142, 145260), (180, 114594), (213, 96840), (216, 95495), (269, 76680), (270, 76396), (284, 72630), (355, 58104), (360, 57297), (426, 48420), (538, 38340), (540, 38198), (568, 36315), (639, 32280), (710, 29052), (807, 25560), (852, 24210), (1065, 19368), (1076, 19170), (1080, 19099), (1278, 16140), (1345, 15336), (1420, 14526), (1614, 12780), (1704, 12105), (1917, 10760), (2130, 9684), (2152, 9585), (2421, 8520), (2556, 8070), (2690, 7668), (2840, 7263), (3195, 6456), (3228, 6390), (3834, 5380), (4035, 5112), (4260, 4842)]