655432240

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1\times {\mathrm{449}}^1$

素因数の和:790

約数の個数: 80

約数和(自身を含む): 1554811200

約数和(自身を除く): 899378960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 257, 284, 355, 449, 514, 568, 710, 898, 1028, 1136, 1285, 1420, 1796, 2056, 2245, 2570, 2840, 3592, 4112, 4490, 5140, 5680, 7184, 8980, 10280, 17960, 18247, 20560, 31879, 35920, 36494, 63758, 72988, 91235, 115393, 127516, 145976, 159395, 182470, 230786, 255032, 291952, 318790, 364940, 461572, 510064, 576965, 637580, 729880, 923144, 1153930, 1275160, 1459760, 1846288, 2307860, 2550320, 4615720, 8192903, 9231440, 16385806, 32771612, 40964515, 65543224, 81929030, 131086448, 163858060, 327716120, 655432240]

約数ペア:

[(1, 655432240), (2, 327716120), (4, 163858060), (5, 131086448), (8, 81929030), (10, 65543224), (16, 40964515), (20, 32771612), (40, 16385806), (71, 9231440), (80, 8192903), (142, 4615720), (257, 2550320), (284, 2307860), (355, 1846288), (449, 1459760), (514, 1275160), (568, 1153930), (710, 923144), (898, 729880), (1028, 637580), (1136, 576965), (1285, 510064), (1420, 461572), (1796, 364940), (2056, 318790), (2245, 291952), (2570, 255032), (2840, 230786), (3592, 182470), (4112, 159395), (4490, 145976), (5140, 127516), (5680, 115393), (7184, 91235), (8980, 72988), (10280, 63758), (17960, 36494), (18247, 35920), (20560, 31879)]