253991680

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:262

約数の個数: 144

約数和(自身を含む): 648716544

約数和(自身を除く): 394724864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 37, 40, 62, 64, 74, 80, 124, 128, 148, 155, 160, 173, 185, 248, 256, 296, 310, 320, 346, 370, 496, 592, 620, 640, 692, 740, 865, 992, 1147, 1184, 1240, 1280, 1384, 1480, 1730, 1984, 2294, 2368, 2480, 2768, 2960, 3460, 3968, 4588, 4736, 4960, 5363, 5536, 5735, 5920, 6401, 6920, 7936, 9176, 9472, 9920, 10726, 11072, 11470, 11840, 12802, 13840, 18352, 19840, 21452, 22144, 22940, 23680, 25604, 26815, 27680, 32005, 36704, 39680, 42904, 44288, 45880, 47360, 51208, 53630, 55360, 64010, 73408, 85808, 91760, 102416, 107260, 110720, 128020, 146816, 171616, 183520, 198431, 204832, 214520, 221440, 256040, 293632, 343232, 367040, 396862, 409664, 429040, 512080, 686464, 734080, 793724, 819328, 858080, 992155, 1024160, 1372928, 1468160, 1587448, 1638656, 1716160, 1984310, 2048320, 3174896, 3432320, 3968620, 4096640, 6349792, 6864640, 7937240, 8193280, 12699584, 15874480, 25399168, 31748960, 50798336, 63497920, 126995840, 253991680]

約数ペア:

[(1, 253991680), (2, 126995840), (4, 63497920), (5, 50798336), (8, 31748960), (10, 25399168), (16, 15874480), (20, 12699584), (31, 8193280), (32, 7937240), (37, 6864640), (40, 6349792), (62, 4096640), (64, 3968620), (74, 3432320), (80, 3174896), (124, 2048320), (128, 1984310), (148, 1716160), (155, 1638656), (160, 1587448), (173, 1468160), (185, 1372928), (248, 1024160), (256, 992155), (296, 858080), (310, 819328), (320, 793724), (346, 734080), (370, 686464), (496, 512080), (592, 429040), (620, 409664), (640, 396862), (692, 367040), (740, 343232), (865, 293632), (992, 256040), (1147, 221440), (1184, 214520), (1240, 204832), (1280, 198431), (1384, 183520), (1480, 171616), (1730, 146816), (1984, 128020), (2294, 110720), (2368, 107260), (2480, 102416), (2768, 91760), (2960, 85808), (3460, 73408), (3968, 64010), (4588, 55360), (4736, 53630), (4960, 51208), (5363, 47360), (5536, 45880), (5735, 44288), (5920, 42904), (6401, 39680), (6920, 36704), (7936, 32005), (9176, 27680), (9472, 26815), (9920, 25604), (10726, 23680), (11072, 22940), (11470, 22144), (11840, 21452), (12802, 19840), (13840, 18352)]