21350210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:275

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 25305790

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 89, 115, 149, 161, 178, 230, 298, 322, 445, 623, 745, 805, 890, 1043, 1246, 1490, 1610, 2047, 2086, 3115, 3427, 4094, 5215, 6230, 6854, 10235, 10430, 13261, 14329, 17135, 20470, 23989, 26522, 28658, 34270, 47978, 66305, 71645, 92827, 119945, 132610, 143290, 185654, 239890, 305003, 464135, 610006, 928270, 1525015, 2135021, 3050030, 4270042, 10675105, 21350210]

約数ペア:

[(1, 21350210), (2, 10675105), (5, 4270042), (7, 3050030), (10, 2135021), (14, 1525015), (23, 928270), (35, 610006), (46, 464135), (70, 305003), (89, 239890), (115, 185654), (149, 143290), (161, 132610), (178, 119945), (230, 92827), (298, 71645), (322, 66305), (445, 47978), (623, 34270), (745, 28658), (805, 26522), (890, 23989), (1043, 20470), (1246, 17135), (1490, 14329), (1610, 13261), (2047, 10430), (2086, 10235), (3115, 6854), (3427, 6230), (4094, 5215)]