21447350

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:281

約数の個数: 48

約数和(自身を含む): 41890176

約数和(自身を除く): 20442826

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 101, 137, 155, 202, 274, 310, 505, 685, 775, 1010, 1370, 1550, 2525, 3131, 3425, 4247, 5050, 6262, 6850, 8494, 13837, 15655, 21235, 27674, 31310, 42470, 69185, 78275, 106175, 138370, 156550, 212350, 345925, 428947, 691850, 857894, 2144735, 4289470, 10723675, 21447350]

約数ペア:

[(1, 21447350), (2, 10723675), (5, 4289470), (10, 2144735), (25, 857894), (31, 691850), (50, 428947), (62, 345925), (101, 212350), (137, 156550), (155, 138370), (202, 106175), (274, 78275), (310, 69185), (505, 42470), (685, 31310), (775, 27674), (1010, 21235), (1370, 15655), (1550, 13837), (2525, 8494), (3131, 6850), (3425, 6262), (4247, 5050)]