21879676

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{277}}^1$

素因数の和:339

約数の個数: 72

約数和(自身を含む): 49693056

約数和(自身を除く): 27813380

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 49, 52, 62, 91, 98, 124, 182, 196, 217, 277, 364, 403, 434, 554, 637, 806, 868, 1108, 1274, 1519, 1612, 1939, 2548, 2821, 3038, 3601, 3878, 5642, 6076, 7202, 7756, 8587, 11284, 13573, 14404, 17174, 19747, 25207, 27146, 34348, 39494, 50414, 54292, 60109, 78988, 100828, 111631, 120218, 176449, 223262, 240436, 352898, 420763, 446524, 705796, 781417, 841526, 1562834, 1683052, 3125668, 5469919, 10939838, 21879676]

約数ペア:

[(1, 21879676), (2, 10939838), (4, 5469919), (7, 3125668), (13, 1683052), (14, 1562834), (26, 841526), (28, 781417), (31, 705796), (49, 446524), (52, 420763), (62, 352898), (91, 240436), (98, 223262), (124, 176449), (182, 120218), (196, 111631), (217, 100828), (277, 78988), (364, 60109), (403, 54292), (434, 50414), (554, 39494), (637, 34348), (806, 27146), (868, 25207), (1108, 19747), (1274, 17174), (1519, 14404), (1612, 13573), (1939, 11284), (2548, 8587), (2821, 7756), (3038, 7202), (3601, 6076), (3878, 5642)]