21452750

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{269}}^1$

素因数の和:326

約数の個数: 64

約数和(自身を含む): 45489600

約数和(自身を除く): 24036850

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 50, 55, 58, 110, 125, 145, 250, 269, 275, 290, 319, 538, 550, 638, 725, 1345, 1375, 1450, 1595, 2690, 2750, 2959, 3190, 3625, 5918, 6725, 7250, 7801, 7975, 13450, 14795, 15602, 15950, 29590, 33625, 39005, 39875, 67250, 73975, 78010, 79750, 85811, 147950, 171622, 195025, 369875, 390050, 429055, 739750, 858110, 975125, 1950250, 2145275, 4290550, 10726375, 21452750]

約数ペア:

[(1, 21452750), (2, 10726375), (5, 4290550), (10, 2145275), (11, 1950250), (22, 975125), (25, 858110), (29, 739750), (50, 429055), (55, 390050), (58, 369875), (110, 195025), (125, 171622), (145, 147950), (250, 85811), (269, 79750), (275, 78010), (290, 73975), (319, 67250), (538, 39875), (550, 39005), (638, 33625), (725, 29590), (1345, 15950), (1375, 15602), (1450, 14795), (1595, 13450), (2690, 7975), (2750, 7801), (2959, 7250), (3190, 6725), (3625, 5918)]