21752325

素因数分解:

$3^2\times 5^2\times 7^2\times {\mathrm{1973}}^1$

素因数の和:2003

約数の個数: 54

約数和(自身を含む): 45344754

約数和(自身を除く): 23592429

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 49, 63, 75, 105, 147, 175, 225, 245, 315, 441, 525, 735, 1225, 1575, 1973, 2205, 3675, 5919, 9865, 11025, 13811, 17757, 29595, 41433, 49325, 69055, 88785, 96677, 124299, 147975, 207165, 290031, 345275, 443925, 483385, 621495, 870093, 1035825, 1450155, 2416925, 3107475, 4350465, 7250775, 21752325]

約数ペア:

[(1, 21752325), (3, 7250775), (5, 4350465), (7, 3107475), (9, 2416925), (15, 1450155), (21, 1035825), (25, 870093), (35, 621495), (45, 483385), (49, 443925), (63, 345275), (75, 290031), (105, 207165), (147, 147975), (175, 124299), (225, 96677), (245, 88785), (315, 69055), (441, 49325), (525, 41433), (735, 29595), (1225, 17757), (1575, 13811), (1973, 11025), (2205, 9865), (3675, 5919)]