21167972375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{431}}^1\times {\mathrm{1553}}^1$

素因数の和:2033

約数の個数: 64

約数和(自身を含む): 30161424384

約数和(自身を除く): 8993452009

約数列:

[1, 5, 11, 23, 25, 55, 115, 125, 253, 275, 431, 575, 1265, 1375, 1553, 2155, 2875, 4741, 6325, 7765, 9913, 10775, 17083, 23705, 31625, 35719, 38825, 49565, 53875, 85415, 109043, 118525, 178595, 194125, 247825, 392909, 427075, 545215, 592625, 669343, 892975, 1239125, 1964545, 2135375, 2726075, 3346715, 4464875, 7362773, 9822725, 13630375, 15394889, 16733575, 36813865, 49113625, 76974445, 83667875, 169343779, 184069325, 384872225, 846718895, 920346625, 1924361125, 4233594475, 21167972375]

約数ペア:

[(1, 21167972375), (5, 4233594475), (11, 1924361125), (23, 920346625), (25, 846718895), (55, 384872225), (115, 184069325), (125, 169343779), (253, 83667875), (275, 76974445), (431, 49113625), (575, 36813865), (1265, 16733575), (1375, 15394889), (1553, 13630375), (2155, 9822725), (2875, 7362773), (4741, 4464875), (6325, 3346715), (7765, 2726075), (9913, 2135375), (10775, 1964545), (17083, 1239125), (23705, 892975), (31625, 669343), (35719, 592625), (38825, 545215), (49565, 427075), (53875, 392909), (85415, 247825), (109043, 194125), (118525, 178595)]