19960900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 45997056

約数和(自身を除く): 26036156

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 47, 50, 62, 94, 100, 124, 137, 155, 188, 235, 274, 310, 470, 548, 620, 685, 775, 940, 1175, 1370, 1457, 1550, 2350, 2740, 2914, 3100, 3425, 4247, 4700, 5828, 6439, 6850, 7285, 8494, 12878, 13700, 14570, 16988, 21235, 25756, 29140, 32195, 36425, 42470, 64390, 72850, 84940, 106175, 128780, 145700, 160975, 199609, 212350, 321950, 399218, 424700, 643900, 798436, 998045, 1996090, 3992180, 4990225, 9980450, 19960900]

約数ペア:

[(1, 19960900), (2, 9980450), (4, 4990225), (5, 3992180), (10, 1996090), (20, 998045), (25, 798436), (31, 643900), (47, 424700), (50, 399218), (62, 321950), (94, 212350), (100, 199609), (124, 160975), (137, 145700), (155, 128780), (188, 106175), (235, 84940), (274, 72850), (310, 64390), (470, 42470), (548, 36425), (620, 32195), (685, 29140), (775, 25756), (940, 21235), (1175, 16988), (1370, 14570), (1457, 13700), (1550, 12878), (2350, 8494), (2740, 7285), (2914, 6850), (3100, 6439), (3425, 5828), (4247, 4700)]