129475840

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:316

約数の個数: 144

約数和(自身を含む): 346139136

約数和(自身を除く): 216663296

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 251, 256, 260, 310, 320, 403, 416, 496, 502, 520, 620, 640, 806, 832, 992, 1004, 1040, 1240, 1255, 1280, 1612, 1664, 1984, 2008, 2015, 2080, 2480, 2510, 3224, 3263, 3328, 3968, 4016, 4030, 4160, 4960, 5020, 6448, 6526, 7781, 7936, 8032, 8060, 8320, 9920, 10040, 12896, 13052, 15562, 16064, 16120, 16315, 16640, 19840, 20080, 25792, 26104, 31124, 32128, 32240, 32630, 38905, 39680, 40160, 51584, 52208, 62248, 64256, 64480, 65260, 77810, 80320, 101153, 103168, 104416, 124496, 128960, 130520, 155620, 160640, 202306, 208832, 248992, 257920, 261040, 311240, 321280, 404612, 417664, 497984, 505765, 515840, 522080, 622480, 809224, 835328, 995968, 1011530, 1044160, 1244960, 1618448, 1991936, 2023060, 2088320, 2489920, 3236896, 4046120, 4176640, 4979840, 6473792, 8092240, 9959680, 12947584, 16184480, 25895168, 32368960, 64737920, 129475840]

約数ペア:

[(1, 129475840), (2, 64737920), (4, 32368960), (5, 25895168), (8, 16184480), (10, 12947584), (13, 9959680), (16, 8092240), (20, 6473792), (26, 4979840), (31, 4176640), (32, 4046120), (40, 3236896), (52, 2489920), (62, 2088320), (64, 2023060), (65, 1991936), (80, 1618448), (104, 1244960), (124, 1044160), (128, 1011530), (130, 995968), (155, 835328), (160, 809224), (208, 622480), (248, 522080), (251, 515840), (256, 505765), (260, 497984), (310, 417664), (320, 404612), (403, 321280), (416, 311240), (496, 261040), (502, 257920), (520, 248992), (620, 208832), (640, 202306), (806, 160640), (832, 155620), (992, 130520), (1004, 128960), (1040, 124496), (1240, 104416), (1255, 103168), (1280, 101153), (1612, 80320), (1664, 77810), (1984, 65260), (2008, 64480), (2015, 64256), (2080, 62248), (2480, 52208), (2510, 51584), (3224, 40160), (3263, 39680), (3328, 38905), (3968, 32630), (4016, 32240), (4030, 32128), (4160, 31124), (4960, 26104), (5020, 25792), (6448, 20080), (6526, 19840), (7781, 16640), (7936, 16315), (8032, 16120), (8060, 16064), (8320, 15562), (9920, 13052), (10040, 12896)]