161990500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1493}}^1$

素因数の和:1550

約数の個数: 96

約数和(自身を含む): 417650688

約数和(自身を除く): 255660188

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 50, 62, 70, 100, 124, 125, 140, 155, 175, 217, 250, 310, 350, 434, 500, 620, 700, 775, 868, 875, 1085, 1493, 1550, 1750, 2170, 2986, 3100, 3500, 3875, 4340, 5425, 5972, 7465, 7750, 10451, 10850, 14930, 15500, 20902, 21700, 27125, 29860, 37325, 41804, 46283, 52255, 54250, 74650, 92566, 104510, 108500, 149300, 185132, 186625, 209020, 231415, 261275, 323981, 373250, 462830, 522550, 647962, 746500, 925660, 1045100, 1157075, 1295924, 1306375, 1619905, 2314150, 2612750, 3239810, 4628300, 5225500, 5785375, 6479620, 8099525, 11570750, 16199050, 23141500, 32398100, 40497625, 80995250, 161990500]

約数ペア:

[(1, 161990500), (2, 80995250), (4, 40497625), (5, 32398100), (7, 23141500), (10, 16199050), (14, 11570750), (20, 8099525), (25, 6479620), (28, 5785375), (31, 5225500), (35, 4628300), (50, 3239810), (62, 2612750), (70, 2314150), (100, 1619905), (124, 1306375), (125, 1295924), (140, 1157075), (155, 1045100), (175, 925660), (217, 746500), (250, 647962), (310, 522550), (350, 462830), (434, 373250), (500, 323981), (620, 261275), (700, 231415), (775, 209020), (868, 186625), (875, 185132), (1085, 149300), (1493, 108500), (1550, 104510), (1750, 92566), (2170, 74650), (2986, 54250), (3100, 52255), (3500, 46283), (3875, 41804), (4340, 37325), (5425, 29860), (5972, 27125), (7465, 21700), (7750, 20902), (10451, 15500), (10850, 14930)]