21581644

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{359}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 24383156

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 113, 133, 226, 266, 359, 452, 532, 718, 791, 1436, 1582, 2147, 2513, 3164, 4294, 5026, 6821, 8588, 10052, 13642, 15029, 27284, 30058, 40567, 47747, 60116, 81134, 95494, 162268, 190988, 283969, 567938, 770773, 1135876, 1541546, 3083092, 5395411, 10790822, 21581644]

約数ペア:

[(1, 21581644), (2, 10790822), (4, 5395411), (7, 3083092), (14, 1541546), (19, 1135876), (28, 770773), (38, 567938), (76, 283969), (113, 190988), (133, 162268), (226, 95494), (266, 81134), (359, 60116), (452, 47747), (532, 40567), (718, 30058), (791, 27284), (1436, 15029), (1582, 13642), (2147, 10052), (2513, 8588), (3164, 6821), (4294, 5026)]