21235000

素因数分解:

$2^3\times 5^4\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:194

約数の個数: 80

約数和(自身を含む): 51733440

約数和(自身を除く): 30498440

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 125, 137, 155, 200, 248, 250, 274, 310, 500, 548, 620, 625, 685, 775, 1000, 1096, 1240, 1250, 1370, 1550, 2500, 2740, 3100, 3425, 3875, 4247, 5000, 5480, 6200, 6850, 7750, 8494, 13700, 15500, 16988, 17125, 19375, 21235, 27400, 31000, 33976, 34250, 38750, 42470, 68500, 77500, 84940, 85625, 106175, 137000, 155000, 169880, 171250, 212350, 342500, 424700, 530875, 685000, 849400, 1061750, 2123500, 2654375, 4247000, 5308750, 10617500, 21235000]

約数ペア:

[(1, 21235000), (2, 10617500), (4, 5308750), (5, 4247000), (8, 2654375), (10, 2123500), (20, 1061750), (25, 849400), (31, 685000), (40, 530875), (50, 424700), (62, 342500), (100, 212350), (124, 171250), (125, 169880), (137, 155000), (155, 137000), (200, 106175), (248, 85625), (250, 84940), (274, 77500), (310, 68500), (500, 42470), (548, 38750), (620, 34250), (625, 33976), (685, 31000), (775, 27400), (1000, 21235), (1096, 19375), (1240, 17125), (1250, 16988), (1370, 15500), (1550, 13700), (2500, 8494), (2740, 7750), (3100, 6850), (3425, 6200), (3875, 5480), (4247, 5000)]