28745990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1019}}^1$

素因数の和:1077

約数の個数: 64

約数和(自身を含む): 65802240

約数和(自身を除く): 37056250

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 31, 35, 62, 65, 70, 91, 130, 155, 182, 217, 310, 403, 434, 455, 806, 910, 1019, 1085, 2015, 2038, 2170, 2821, 4030, 5095, 5642, 7133, 10190, 13247, 14105, 14266, 26494, 28210, 31589, 35665, 63178, 66235, 71330, 92729, 132470, 157945, 185458, 221123, 315890, 410657, 442246, 463645, 821314, 927290, 1105615, 2053285, 2211230, 2874599, 4106570, 5749198, 14372995, 28745990]

約数ペア:

[(1, 28745990), (2, 14372995), (5, 5749198), (7, 4106570), (10, 2874599), (13, 2211230), (14, 2053285), (26, 1105615), (31, 927290), (35, 821314), (62, 463645), (65, 442246), (70, 410657), (91, 315890), (130, 221123), (155, 185458), (182, 157945), (217, 132470), (310, 92729), (403, 71330), (434, 66235), (455, 63178), (806, 35665), (910, 31589), (1019, 28210), (1085, 26494), (2015, 14266), (2038, 14105), (2170, 13247), (2821, 10190), (4030, 7133), (5095, 5642)]