278047900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{11257}}^1$

素因数の和:11303

約数の個数: 72

約数和(自身を含む): 684036080

約数和(自身を除く): 405988180

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 38, 50, 52, 65, 76, 95, 100, 130, 190, 247, 260, 325, 380, 475, 494, 650, 950, 988, 1235, 1300, 1900, 2470, 4940, 6175, 11257, 12350, 22514, 24700, 45028, 56285, 112570, 146341, 213883, 225140, 281425, 292682, 427766, 562850, 585364, 731705, 855532, 1069415, 1125700, 1463410, 2138830, 2780479, 2926820, 3658525, 4277660, 5347075, 5560958, 7317050, 10694150, 11121916, 13902395, 14634100, 21388300, 27804790, 55609580, 69511975, 139023950, 278047900]

約数ペア:

[(1, 278047900), (2, 139023950), (4, 69511975), (5, 55609580), (10, 27804790), (13, 21388300), (19, 14634100), (20, 13902395), (25, 11121916), (26, 10694150), (38, 7317050), (50, 5560958), (52, 5347075), (65, 4277660), (76, 3658525), (95, 2926820), (100, 2780479), (130, 2138830), (190, 1463410), (247, 1125700), (260, 1069415), (325, 855532), (380, 731705), (475, 585364), (494, 562850), (650, 427766), (950, 292682), (988, 281425), (1235, 225140), (1300, 213883), (1900, 146341), (2470, 112570), (4940, 56285), (6175, 45028), (11257, 24700), (12350, 22514)]