257578020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{204427}}^1$

素因数の和:204449

約数の個数: 72

約数和(自身を含む): 892941504

約数和(自身を除く): 635363484

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 204427, 408854, 613281, 817708, 1022135, 1226562, 1430989, 1839843, 2044270, 2453124, 2861978, 3066405, 3679686, 4088540, 4292967, 5723956, 6132810, 7154945, 7359372, 8585934, 9199215, 12265620, 12878901, 14309890, 17171868, 18398430, 21464835, 25757802, 28619780, 36796860, 42929670, 51515604, 64394505, 85859340, 128789010, 257578020]

約数ペア:

[(1, 257578020), (2, 128789010), (3, 85859340), (4, 64394505), (5, 51515604), (6, 42929670), (7, 36796860), (9, 28619780), (10, 25757802), (12, 21464835), (14, 18398430), (15, 17171868), (18, 14309890), (20, 12878901), (21, 12265620), (28, 9199215), (30, 8585934), (35, 7359372), (36, 7154945), (42, 6132810), (45, 5723956), (60, 4292967), (63, 4088540), (70, 3679686), (84, 3066405), (90, 2861978), (105, 2453124), (126, 2044270), (140, 1839843), (180, 1430989), (210, 1226562), (252, 1022135), (315, 817708), (420, 613281), (630, 408854), (1260, 204427)]