21661192700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{389}}^1\times {\mathrm{79549}}^1$

素因数の和:79959

約数の個数: 72

約数和(自身を含む): 53858532000

約数和(自身を除く): 32197339300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 389, 700, 778, 1556, 1945, 2723, 3890, 5446, 7780, 9725, 10892, 13615, 19450, 27230, 38900, 54460, 68075, 79549, 136150, 159098, 272300, 318196, 397745, 556843, 795490, 1113686, 1590980, 1988725, 2227372, 2784215, 3977450, 5568430, 7954900, 11136860, 13921075, 27842150, 30944561, 55684300, 61889122, 123778244, 154722805, 216611927, 309445610, 433223854, 618891220, 773614025, 866447708, 1083059635, 1547228050, 2166119270, 3094456100, 4332238540, 5415298175, 10830596350, 21661192700]

約数ペア:

[(1, 21661192700), (2, 10830596350), (4, 5415298175), (5, 4332238540), (7, 3094456100), (10, 2166119270), (14, 1547228050), (20, 1083059635), (25, 866447708), (28, 773614025), (35, 618891220), (50, 433223854), (70, 309445610), (100, 216611927), (140, 154722805), (175, 123778244), (350, 61889122), (389, 55684300), (700, 30944561), (778, 27842150), (1556, 13921075), (1945, 11136860), (2723, 7954900), (3890, 5568430), (5446, 3977450), (7780, 2784215), (9725, 2227372), (10892, 1988725), (13615, 1590980), (19450, 1113686), (27230, 795490), (38900, 556843), (54460, 397745), (68075, 318196), (79549, 272300), (136150, 159098)]