640407456

素因数分解:

$2^5\times 3^2\times {\mathrm{13}}^1\times {\mathrm{171049}}^1$

素因数の和:171078

約数の個数: 72

約数和(自身を含む): 1961259300

約数和(自身を除く): 1320851844

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 48, 52, 72, 78, 96, 104, 117, 144, 156, 208, 234, 288, 312, 416, 468, 624, 936, 1248, 1872, 3744, 171049, 342098, 513147, 684196, 1026294, 1368392, 1539441, 2052588, 2223637, 2736784, 3078882, 4105176, 4447274, 5473568, 6157764, 6670911, 8210352, 8894548, 12315528, 13341822, 16420704, 17789096, 20012733, 24631056, 26683644, 35578192, 40025466, 49262112, 53367288, 71156384, 80050932, 106734576, 160101864, 213469152, 320203728, 640407456]

約数ペア:

[(1, 640407456), (2, 320203728), (3, 213469152), (4, 160101864), (6, 106734576), (8, 80050932), (9, 71156384), (12, 53367288), (13, 49262112), (16, 40025466), (18, 35578192), (24, 26683644), (26, 24631056), (32, 20012733), (36, 17789096), (39, 16420704), (48, 13341822), (52, 12315528), (72, 8894548), (78, 8210352), (96, 6670911), (104, 6157764), (117, 5473568), (144, 4447274), (156, 4105176), (208, 3078882), (234, 2736784), (288, 2223637), (312, 2052588), (416, 1539441), (468, 1368392), (624, 1026294), (936, 684196), (1248, 513147), (1872, 342098), (3744, 171049)]