21411075

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2399}}^1$

素因数の和:2436

約数の個数: 48

約数和(自身を含む): 42854400

約数和(自身を除く): 21443325

約数列:

[1, 3, 5, 7, 15, 17, 21, 25, 35, 51, 75, 85, 105, 119, 175, 255, 357, 425, 525, 595, 1275, 1785, 2399, 2975, 7197, 8925, 11995, 16793, 35985, 40783, 50379, 59975, 83965, 122349, 179925, 203915, 251895, 285481, 419825, 611745, 856443, 1019575, 1259475, 1427405, 3058725, 4282215, 7137025, 21411075]

約数ペア:

[(1, 21411075), (3, 7137025), (5, 4282215), (7, 3058725), (15, 1427405), (17, 1259475), (21, 1019575), (25, 856443), (35, 611745), (51, 419825), (75, 285481), (85, 251895), (105, 203915), (119, 179925), (175, 122349), (255, 83965), (357, 59975), (425, 50379), (525, 40783), (595, 35985), (1275, 16793), (1785, 11995), (2399, 8925), (2975, 7197)]