278803460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{34591}}^1$

素因数の和:34644

約数の個数: 48

約数和(自身を含む): 650883072

約数和(自身を除く): 372079612

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, 4030, 8060, 34591, 69182, 138364, 172955, 345910, 449683, 691820, 899366, 1072321, 1798732, 2144642, 2248415, 4289284, 4496830, 5361605, 8993660, 10723210, 13940173, 21446420, 27880346, 55760692, 69700865, 139401730, 278803460]

約数ペア:

[(1, 278803460), (2, 139401730), (4, 69700865), (5, 55760692), (10, 27880346), (13, 21446420), (20, 13940173), (26, 10723210), (31, 8993660), (52, 5361605), (62, 4496830), (65, 4289284), (124, 2248415), (130, 2144642), (155, 1798732), (260, 1072321), (310, 899366), (403, 691820), (620, 449683), (806, 345910), (1612, 172955), (2015, 138364), (4030, 69182), (8060, 34591)]