420796480

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:325

約数の個数: 168

約数和(自身を含む): 1124492544

約数和(自身を除く): 703696064

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 130, 155, 160, 169, 208, 248, 251, 260, 310, 320, 338, 403, 416, 496, 502, 520, 620, 676, 806, 832, 845, 992, 1004, 1040, 1240, 1255, 1352, 1612, 1690, 1984, 2008, 2015, 2080, 2480, 2510, 2704, 3224, 3263, 3380, 4016, 4030, 4160, 4960, 5020, 5239, 5408, 6448, 6526, 6760, 7781, 8032, 8060, 9920, 10040, 10478, 10816, 12896, 13052, 13520, 15562, 16064, 16120, 16315, 20080, 20956, 25792, 26104, 26195, 27040, 31124, 32240, 32630, 38905, 40160, 41912, 42419, 52208, 52390, 54080, 62248, 64480, 65260, 77810, 80320, 83824, 84838, 101153, 104416, 104780, 124496, 128960, 130520, 155620, 167648, 169676, 202306, 208832, 209560, 212095, 248992, 261040, 311240, 335296, 339352, 404612, 419120, 424190, 497984, 505765, 522080, 622480, 678704, 809224, 838240, 848380, 1011530, 1044160, 1244960, 1314989, 1357408, 1618448, 1676480, 1696760, 2023060, 2489920, 2629978, 2714816, 3236896, 3393520, 4046120, 5259956, 6473792, 6574945, 6787040, 8092240, 10519912, 13149890, 13574080, 16184480, 21039824, 26299780, 32368960, 42079648, 52599560, 84159296, 105199120, 210398240, 420796480]

約数ペア:

[(1, 420796480), (2, 210398240), (4, 105199120), (5, 84159296), (8, 52599560), (10, 42079648), (13, 32368960), (16, 26299780), (20, 21039824), (26, 16184480), (31, 13574080), (32, 13149890), (40, 10519912), (52, 8092240), (62, 6787040), (64, 6574945), (65, 6473792), (80, 5259956), (104, 4046120), (124, 3393520), (130, 3236896), (155, 2714816), (160, 2629978), (169, 2489920), (208, 2023060), (248, 1696760), (251, 1676480), (260, 1618448), (310, 1357408), (320, 1314989), (338, 1244960), (403, 1044160), (416, 1011530), (496, 848380), (502, 838240), (520, 809224), (620, 678704), (676, 622480), (806, 522080), (832, 505765), (845, 497984), (992, 424190), (1004, 419120), (1040, 404612), (1240, 339352), (1255, 335296), (1352, 311240), (1612, 261040), (1690, 248992), (1984, 212095), (2008, 209560), (2015, 208832), (2080, 202306), (2480, 169676), (2510, 167648), (2704, 155620), (3224, 130520), (3263, 128960), (3380, 124496), (4016, 104780), (4030, 104416), (4160, 101153), (4960, 84838), (5020, 83824), (5239, 80320), (5408, 77810), (6448, 65260), (6526, 64480), (6760, 62248), (7781, 54080), (8032, 52390), (8060, 52208), (9920, 42419), (10040, 41912), (10478, 40160), (10816, 38905), (12896, 32630), (13052, 32240), (13520, 31124), (15562, 27040), (16064, 26195), (16120, 26104), (16315, 25792), (20080, 20956)]