30723220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{359}}^1\times {\mathrm{389}}^1$

素因数の和:768

約数の個数: 48

約数和(自身を含む): 70761600

約数和(自身を除く): 40038380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 359, 389, 718, 778, 1436, 1556, 1795, 1945, 3590, 3890, 3949, 4279, 7180, 7780, 7898, 8558, 15796, 17116, 19745, 21395, 39490, 42790, 78980, 85580, 139651, 279302, 558604, 698255, 1396510, 1536161, 2793020, 3072322, 6144644, 7680805, 15361610, 30723220]

約数ペア:

[(1, 30723220), (2, 15361610), (4, 7680805), (5, 6144644), (10, 3072322), (11, 2793020), (20, 1536161), (22, 1396510), (44, 698255), (55, 558604), (110, 279302), (220, 139651), (359, 85580), (389, 78980), (718, 42790), (778, 39490), (1436, 21395), (1556, 19745), (1795, 17116), (1945, 15796), (3590, 8558), (3890, 7898), (3949, 7780), (4279, 7180)]