20954951680

素因数分解:

$2^{12}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78707}}^1$

素因数の和:78749

約数の個数: 104

約数和(自身を含む): 54154567152

約数和(自身を除く): 33199615472

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, 512, 520, 640, 832, 1024, 1040, 1280, 1664, 2048, 2080, 2560, 3328, 4096, 4160, 5120, 6656, 8320, 10240, 13312, 16640, 20480, 26624, 33280, 53248, 66560, 78707, 133120, 157414, 266240, 314828, 393535, 629656, 787070, 1023191, 1259312, 1574140, 2046382, 2518624, 3148280, 4092764, 5037248, 5115955, 6296560, 8185528, 10074496, 10231910, 12593120, 16371056, 20148992, 20463820, 25186240, 32742112, 40297984, 40927640, 50372480, 65484224, 80595968, 81855280, 100744960, 130968448, 161191936, 163710560, 201489920, 261936896, 322383872, 327421120, 402979840, 523873792, 654842240, 805959680, 1047747584, 1309684480, 1611919360, 2095495168, 2619368960, 4190990336, 5238737920, 10477475840, 20954951680]

約数ペア:

[(1, 20954951680), (2, 10477475840), (4, 5238737920), (5, 4190990336), (8, 2619368960), (10, 2095495168), (13, 1611919360), (16, 1309684480), (20, 1047747584), (26, 805959680), (32, 654842240), (40, 523873792), (52, 402979840), (64, 327421120), (65, 322383872), (80, 261936896), (104, 201489920), (128, 163710560), (130, 161191936), (160, 130968448), (208, 100744960), (256, 81855280), (260, 80595968), (320, 65484224), (416, 50372480), (512, 40927640), (520, 40297984), (640, 32742112), (832, 25186240), (1024, 20463820), (1040, 20148992), (1280, 16371056), (1664, 12593120), (2048, 10231910), (2080, 10074496), (2560, 8185528), (3328, 6296560), (4096, 5115955), (4160, 5037248), (5120, 4092764), (6656, 3148280), (8320, 2518624), (10240, 2046382), (13312, 1574140), (16640, 1259312), (20480, 1023191), (26624, 787070), (33280, 629656), (53248, 393535), (66560, 314828), (78707, 266240), (133120, 157414)]