161963375

素因数分解:

$5^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{853}}^1$

素因数の和:913

約数の個数: 48

約数和(自身を含む): 243000576

約数和(自身を除く): 81037201

約数列:

[1, 5, 7, 25, 31, 35, 49, 125, 155, 175, 217, 245, 775, 853, 875, 1085, 1225, 1519, 3875, 4265, 5425, 5971, 6125, 7595, 21325, 26443, 27125, 29855, 37975, 41797, 106625, 132215, 149275, 185101, 189875, 208985, 661075, 746375, 925505, 1044925, 1295707, 3305375, 4627525, 5224625, 6478535, 23137625, 32392675, 161963375]

約数ペア:

[(1, 161963375), (5, 32392675), (7, 23137625), (25, 6478535), (31, 5224625), (35, 4627525), (49, 3305375), (125, 1295707), (155, 1044925), (175, 925505), (217, 746375), (245, 661075), (775, 208985), (853, 189875), (875, 185101), (1085, 149275), (1225, 132215), (1519, 106625), (3875, 41797), (4265, 37975), (5425, 29855), (5971, 27125), (6125, 26443), (7595, 21325)]