About the Number

1209909720

1209909719 ← → 1209909721

2進数表記:1001000000111011100000111011000

漢数字表記:十二億九百九十万九千七百二十

素因数分解:

2 3 × 3 1 × 5 1 × 17 1 × 47 1 × 12619 1

素因数の和:12697
約数の個数: 128
約数和(自身を含む): 3925324800
約数和(自身を除く): 2715415080

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 47, 51, 60, 68, 85, 94, 102, 120, 136, 141, 170, 188, 204, 235, 255, 282, 340, 376, 408, 470, 510, 564, 680, 705, 799, 940, 1020, 1128, 1410, 1598, 1880, 2040, 2397, 2820, 3196, 3995, 4794, 5640, 6392, 7990, 9588, 11985, 12619, 15980, 19176, 23970, 25238, 31960, 37857, 47940, 50476, 63095, 75714, 95880, 100952, 126190, 151428, 189285, 214523, 252380, 302856, 378570, 429046, 504760, 593093, 643569, 757140, 858092, 1072615, 1186186, 1287138, 1514280, 1716184, 1779279, 2145230, 2372372, 2574276, 2965465, 3217845, 3558558, 4290460, 4744744, 5148552, 5930930, 6435690, 7117116, 8580920, 8896395, 10082581, 11861860, 12871380, 14234232, 17792790, 20165162, 23723720, 25742760, 30247743, 35585580, 40330324, 50412905, 60495486, 71171160, 80660648, 100825810, 120990972, 151238715, 201651620, 241981944, 302477430, 403303240, 604954860, 1209909720]

約数ペア:
[(1, 1209909720), (2, 604954860), (3, 403303240), (4, 302477430), (5, 241981944), (6, 201651620), (8, 151238715), (10, 120990972), (12, 100825810), (15, 80660648), (17, 71171160), (20, 60495486), (24, 50412905), (30, 40330324), (34, 35585580), (40, 30247743), (47, 25742760), (51, 23723720), (60, 20165162), (68, 17792790), (85, 14234232), (94, 12871380), (102, 11861860), (120, 10082581), (136, 8896395), (141, 8580920), (170, 7117116), (188, 6435690), (204, 5930930), (235, 5148552), (255, 4744744), (282, 4290460), (340, 3558558), (376, 3217845), (408, 2965465), (470, 2574276), (510, 2372372), (564, 2145230), (680, 1779279), (705, 1716184), (799, 1514280), (940, 1287138), (1020, 1186186), (1128, 1072615), (1410, 858092), (1598, 757140), (1880, 643569), (2040, 593093), (2397, 504760), (2820, 429046), (3196, 378570), (3995, 302856), (4794, 252380), (5640, 214523), (6392, 189285), (7990, 151428), (9588, 126190), (11985, 100952), (12619, 95880), (15980, 75714), (19176, 63095), (23970, 50476), (25238, 47940), (31960, 37857)]

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