78257920

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4703}}^1$

素因数の和:4737

約数の個数: 72

約数和(自身を含む): 201914496

約数和(自身を除く): 123656576

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1664, 2080, 3328, 4160, 4703, 8320, 9406, 16640, 18812, 23515, 37624, 47030, 61139, 75248, 94060, 122278, 150496, 188120, 244556, 300992, 305695, 376240, 489112, 601984, 611390, 752480, 978224, 1203968, 1222780, 1504960, 1956448, 2445560, 3009920, 3912896, 4891120, 6019840, 7825792, 9782240, 15651584, 19564480, 39128960, 78257920]

約数ペア:

[(1, 78257920), (2, 39128960), (4, 19564480), (5, 15651584), (8, 9782240), (10, 7825792), (13, 6019840), (16, 4891120), (20, 3912896), (26, 3009920), (32, 2445560), (40, 1956448), (52, 1504960), (64, 1222780), (65, 1203968), (80, 978224), (104, 752480), (128, 611390), (130, 601984), (160, 489112), (208, 376240), (256, 305695), (260, 300992), (320, 244556), (416, 188120), (520, 150496), (640, 122278), (832, 94060), (1040, 75248), (1280, 61139), (1664, 47030), (2080, 37624), (3328, 23515), (4160, 18812), (4703, 16640), (8320, 9406)]