31977988

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{277}}^1$

素因数の和:345

約数の個数: 72

約数和(自身を含む): 70990080

約数和(自身を除く): 39012092

約数列:

[1, 2, 4, 7, 14, 19, 28, 31, 38, 49, 62, 76, 98, 124, 133, 196, 217, 266, 277, 434, 532, 554, 589, 868, 931, 1108, 1178, 1519, 1862, 1939, 2356, 3038, 3724, 3878, 4123, 5263, 6076, 7756, 8246, 8587, 10526, 13573, 16492, 17174, 21052, 27146, 28861, 34348, 36841, 54292, 57722, 60109, 73682, 115444, 120218, 147364, 163153, 240436, 257887, 326306, 420763, 515774, 652612, 841526, 1031548, 1142071, 1683052, 2284142, 4568284, 7994497, 15988994, 31977988]

約数ペア:

[(1, 31977988), (2, 15988994), (4, 7994497), (7, 4568284), (14, 2284142), (19, 1683052), (28, 1142071), (31, 1031548), (38, 841526), (49, 652612), (62, 515774), (76, 420763), (98, 326306), (124, 257887), (133, 240436), (196, 163153), (217, 147364), (266, 120218), (277, 115444), (434, 73682), (532, 60109), (554, 57722), (589, 54292), (868, 36841), (931, 34348), (1108, 28861), (1178, 27146), (1519, 21052), (1862, 17174), (1939, 16492), (2356, 13573), (3038, 10526), (3724, 8587), (3878, 8246), (4123, 7756), (5263, 6076)]