64115440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{251}}^1$

素因数の和:398

約数の個数: 80

約数和(自身を含む): 155990016

約数和(自身を除く): 91874576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 103, 124, 155, 206, 248, 251, 310, 412, 496, 502, 515, 620, 824, 1004, 1030, 1240, 1255, 1648, 2008, 2060, 2480, 2510, 3193, 4016, 4120, 5020, 6386, 7781, 8240, 10040, 12772, 15562, 15965, 20080, 25544, 25853, 31124, 31930, 38905, 51088, 51706, 62248, 63860, 77810, 103412, 124496, 127720, 129265, 155620, 206824, 255440, 258530, 311240, 413648, 517060, 622480, 801443, 1034120, 1602886, 2068240, 3205772, 4007215, 6411544, 8014430, 12823088, 16028860, 32057720, 64115440]

約数ペア:

[(1, 64115440), (2, 32057720), (4, 16028860), (5, 12823088), (8, 8014430), (10, 6411544), (16, 4007215), (20, 3205772), (31, 2068240), (40, 1602886), (62, 1034120), (80, 801443), (103, 622480), (124, 517060), (155, 413648), (206, 311240), (248, 258530), (251, 255440), (310, 206824), (412, 155620), (496, 129265), (502, 127720), (515, 124496), (620, 103412), (824, 77810), (1004, 63860), (1030, 62248), (1240, 51706), (1255, 51088), (1648, 38905), (2008, 31930), (2060, 31124), (2480, 25853), (2510, 25544), (3193, 20080), (4016, 15965), (4120, 15562), (5020, 12772), (6386, 10040), (7781, 8240)]