20522190

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{521}}^1$

素因数の和:645

約数の個数: 64

約数和(自身を含む): 53669952

約数和(自身を除く): 33147762

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 101, 130, 195, 202, 303, 390, 505, 521, 606, 1010, 1042, 1313, 1515, 1563, 2605, 2626, 3030, 3126, 3939, 5210, 6565, 6773, 7815, 7878, 13130, 13546, 15630, 19695, 20319, 33865, 39390, 40638, 52621, 67730, 101595, 105242, 157863, 203190, 263105, 315726, 526210, 684073, 789315, 1368146, 1578630, 2052219, 3420365, 4104438, 6840730, 10261095, 20522190]

約数ペア:

[(1, 20522190), (2, 10261095), (3, 6840730), (5, 4104438), (6, 3420365), (10, 2052219), (13, 1578630), (15, 1368146), (26, 789315), (30, 684073), (39, 526210), (65, 315726), (78, 263105), (101, 203190), (130, 157863), (195, 105242), (202, 101595), (303, 67730), (390, 52621), (505, 40638), (521, 39390), (606, 33865), (1010, 20319), (1042, 19695), (1313, 15630), (1515, 13546), (1563, 13130), (2605, 7878), (2626, 7815), (3030, 6773), (3126, 6565), (3939, 5210)]