20716380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1621}}^1$

素因数の和:1707

約数の個数: 72

約数和(自身を含む): 63764064

約数和(自身を除く): 43047684

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 1621, 2130, 2556, 3195, 3242, 4260, 4863, 6390, 6484, 8105, 9726, 12780, 14589, 16210, 19452, 24315, 29178, 32420, 48630, 58356, 72945, 97260, 115091, 145890, 230182, 291780, 345273, 460364, 575455, 690546, 1035819, 1150910, 1381092, 1726365, 2071638, 2301820, 3452730, 4143276, 5179095, 6905460, 10358190, 20716380]

約数ペア:

[(1, 20716380), (2, 10358190), (3, 6905460), (4, 5179095), (5, 4143276), (6, 3452730), (9, 2301820), (10, 2071638), (12, 1726365), (15, 1381092), (18, 1150910), (20, 1035819), (30, 690546), (36, 575455), (45, 460364), (60, 345273), (71, 291780), (90, 230182), (142, 145890), (180, 115091), (213, 97260), (284, 72945), (355, 58356), (426, 48630), (639, 32420), (710, 29178), (852, 24315), (1065, 19452), (1278, 16210), (1420, 14589), (1621, 12780), (2130, 9726), (2556, 8105), (3195, 6484), (3242, 6390), (4260, 4863)]