641467520

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{263}}^1$

素因数の和:422

約数の個数: 128

約数和(自身を含む): 1596291840

約数和(自身を除く): 954824320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 103, 128, 148, 160, 185, 206, 263, 296, 320, 370, 412, 515, 526, 592, 640, 740, 824, 1030, 1052, 1184, 1315, 1480, 1648, 2060, 2104, 2368, 2630, 2960, 3296, 3811, 4120, 4208, 4736, 5260, 5920, 6592, 7622, 8240, 8416, 9731, 10520, 11840, 13184, 15244, 16480, 16832, 19055, 19462, 21040, 23680, 27089, 30488, 32960, 33664, 38110, 38924, 42080, 48655, 54178, 60976, 65920, 76220, 77848, 84160, 97310, 108356, 121952, 135445, 152440, 155696, 168320, 194620, 216712, 243904, 270890, 304880, 311392, 389240, 433424, 487808, 541780, 609760, 622784, 778480, 866848, 1002293, 1083560, 1219520, 1245568, 1556960, 1733696, 2004586, 2167120, 2439040, 3113920, 3467392, 4009172, 4334240, 5011465, 6227840, 8018344, 8668480, 10022930, 16036688, 17336960, 20045860, 32073376, 40091720, 64146752, 80183440, 128293504, 160366880, 320733760, 641467520]

約数ペア:

[(1, 641467520), (2, 320733760), (4, 160366880), (5, 128293504), (8, 80183440), (10, 64146752), (16, 40091720), (20, 32073376), (32, 20045860), (37, 17336960), (40, 16036688), (64, 10022930), (74, 8668480), (80, 8018344), (103, 6227840), (128, 5011465), (148, 4334240), (160, 4009172), (185, 3467392), (206, 3113920), (263, 2439040), (296, 2167120), (320, 2004586), (370, 1733696), (412, 1556960), (515, 1245568), (526, 1219520), (592, 1083560), (640, 1002293), (740, 866848), (824, 778480), (1030, 622784), (1052, 609760), (1184, 541780), (1315, 487808), (1480, 433424), (1648, 389240), (2060, 311392), (2104, 304880), (2368, 270890), (2630, 243904), (2960, 216712), (3296, 194620), (3811, 168320), (4120, 155696), (4208, 152440), (4736, 135445), (5260, 121952), (5920, 108356), (6592, 97310), (7622, 84160), (8240, 77848), (8416, 76220), (9731, 65920), (10520, 60976), (11840, 54178), (13184, 48655), (15244, 42080), (16480, 38924), (16832, 38110), (19055, 33664), (19462, 32960), (21040, 30488), (23680, 27089)]