20883460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2591}}^1$

素因数の和:2644

約数の個数: 48

約数和(自身を含む): 48771072

約数和(自身を除く): 27887612

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 2591, 4030, 5182, 8060, 10364, 12955, 25910, 33683, 51820, 67366, 80321, 134732, 160642, 168415, 321284, 336830, 401605, 673660, 803210, 1044173, 1606420, 2088346, 4176692, 5220865, 10441730, 20883460]

約数ペア:

[(1, 20883460), (2, 10441730), (4, 5220865), (5, 4176692), (10, 2088346), (13, 1606420), (20, 1044173), (26, 803210), (31, 673660), (52, 401605), (62, 336830), (65, 321284), (124, 168415), (130, 160642), (155, 134732), (260, 80321), (310, 67366), (403, 51820), (620, 33683), (806, 25910), (1612, 12955), (2015, 10364), (2591, 8060), (4030, 5182)]