247883440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:291

約数の個数: 160

約数和(自身を含む): 691384320

約数和(自身を除く): 443500880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 109, 112, 124, 131, 140, 155, 217, 218, 248, 262, 280, 310, 434, 436, 496, 524, 545, 560, 620, 655, 763, 868, 872, 917, 1048, 1085, 1090, 1240, 1310, 1526, 1736, 1744, 1834, 2096, 2170, 2180, 2480, 2620, 3052, 3379, 3472, 3668, 3815, 4061, 4340, 4360, 4585, 5240, 6104, 6758, 7336, 7630, 8122, 8680, 8720, 9170, 10480, 12208, 13516, 14279, 14672, 15260, 16244, 16895, 17360, 18340, 20305, 23653, 27032, 28427, 28558, 30520, 32488, 33790, 36680, 40610, 47306, 54064, 56854, 57116, 61040, 64976, 67580, 71395, 73360, 81220, 94612, 99953, 113708, 114232, 118265, 135160, 142135, 142790, 162440, 189224, 199906, 227416, 228464, 236530, 270320, 284270, 285580, 324880, 378448, 399812, 442649, 454832, 473060, 499765, 568540, 571160, 799624, 885298, 946120, 999530, 1137080, 1142320, 1599248, 1770596, 1892240, 1999060, 2213245, 2274160, 3098543, 3541192, 3998120, 4426490, 6197086, 7082384, 7996240, 8852980, 12394172, 15492715, 17705960, 24788344, 30985430, 35411920, 49576688, 61970860, 123941720, 247883440]

約数ペア:

[(1, 247883440), (2, 123941720), (4, 61970860), (5, 49576688), (7, 35411920), (8, 30985430), (10, 24788344), (14, 17705960), (16, 15492715), (20, 12394172), (28, 8852980), (31, 7996240), (35, 7082384), (40, 6197086), (56, 4426490), (62, 3998120), (70, 3541192), (80, 3098543), (109, 2274160), (112, 2213245), (124, 1999060), (131, 1892240), (140, 1770596), (155, 1599248), (217, 1142320), (218, 1137080), (248, 999530), (262, 946120), (280, 885298), (310, 799624), (434, 571160), (436, 568540), (496, 499765), (524, 473060), (545, 454832), (560, 442649), (620, 399812), (655, 378448), (763, 324880), (868, 285580), (872, 284270), (917, 270320), (1048, 236530), (1085, 228464), (1090, 227416), (1240, 199906), (1310, 189224), (1526, 162440), (1736, 142790), (1744, 142135), (1834, 135160), (2096, 118265), (2170, 114232), (2180, 113708), (2480, 99953), (2620, 94612), (3052, 81220), (3379, 73360), (3472, 71395), (3668, 67580), (3815, 64976), (4061, 61040), (4340, 57116), (4360, 56854), (4585, 54064), (5240, 47306), (6104, 40610), (6758, 36680), (7336, 33790), (7630, 32488), (8122, 30520), (8680, 28558), (8720, 28427), (9170, 27032), (10480, 23653), (12208, 20305), (13516, 18340), (14279, 17360), (14672, 16895), (15260, 16244)]