21453765

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{331}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 35856000

約数和(自身を除く): 14402235

約数列:

[1, 3, 5, 15, 29, 87, 145, 149, 331, 435, 447, 745, 993, 1655, 2235, 4321, 4965, 9599, 12963, 21605, 28797, 47995, 49319, 64815, 143985, 147957, 246595, 739785, 1430251, 4290753, 7151255, 21453765]

約数ペア:

[(1, 21453765), (3, 7151255), (5, 4290753), (15, 1430251), (29, 739785), (87, 246595), (145, 147957), (149, 143985), (331, 64815), (435, 49319), (447, 47995), (745, 28797), (993, 21605), (1655, 12963), (2235, 9599), (4321, 4965)]