21872235

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{653}}^1$

素因数の和:708

約数の個数: 64

約数和(自身を含む): 45204480

約数和(自身を除く): 23332245

約数列:

[1, 3, 5, 7, 11, 15, 21, 29, 33, 35, 55, 77, 87, 105, 145, 165, 203, 231, 319, 385, 435, 609, 653, 957, 1015, 1155, 1595, 1959, 2233, 3045, 3265, 4571, 4785, 6699, 7183, 9795, 11165, 13713, 18937, 21549, 22855, 33495, 35915, 50281, 56811, 68565, 94685, 107745, 132559, 150843, 208307, 251405, 284055, 397677, 624921, 662795, 754215, 1041535, 1458149, 1988385, 3124605, 4374447, 7290745, 21872235]

約数ペア:

[(1, 21872235), (3, 7290745), (5, 4374447), (7, 3124605), (11, 1988385), (15, 1458149), (21, 1041535), (29, 754215), (33, 662795), (35, 624921), (55, 397677), (77, 284055), (87, 251405), (105, 208307), (145, 150843), (165, 132559), (203, 107745), (231, 94685), (319, 68565), (385, 56811), (435, 50281), (609, 35915), (653, 33495), (957, 22855), (1015, 21549), (1155, 18937), (1595, 13713), (1959, 11165), (2233, 9795), (3045, 7183), (3265, 6699), (4571, 4785)]