128230880

素因数分解:

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

素因数の和:400

約数の個数: 96

約数和(自身を含む): 317011968

約数和(自身を除く): 188781088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 103, 124, 155, 160, 206, 248, 251, 310, 412, 496, 502, 515, 620, 824, 992, 1004, 1030, 1240, 1255, 1648, 2008, 2060, 2480, 2510, 3193, 3296, 4016, 4120, 4960, 5020, 6386, 7781, 8032, 8240, 10040, 12772, 15562, 15965, 16480, 20080, 25544, 25853, 31124, 31930, 38905, 40160, 51088, 51706, 62248, 63860, 77810, 102176, 103412, 124496, 127720, 129265, 155620, 206824, 248992, 255440, 258530, 311240, 413648, 510880, 517060, 622480, 801443, 827296, 1034120, 1244960, 1602886, 2068240, 3205772, 4007215, 4136480, 6411544, 8014430, 12823088, 16028860, 25646176, 32057720, 64115440, 128230880]

約数ペア:

[(1, 128230880), (2, 64115440), (4, 32057720), (5, 25646176), (8, 16028860), (10, 12823088), (16, 8014430), (20, 6411544), (31, 4136480), (32, 4007215), (40, 3205772), (62, 2068240), (80, 1602886), (103, 1244960), (124, 1034120), (155, 827296), (160, 801443), (206, 622480), (248, 517060), (251, 510880), (310, 413648), (412, 311240), (496, 258530), (502, 255440), (515, 248992), (620, 206824), (824, 155620), (992, 129265), (1004, 127720), (1030, 124496), (1240, 103412), (1255, 102176), (1648, 77810), (2008, 63860), (2060, 62248), (2480, 51706), (2510, 51088), (3193, 40160), (3296, 38905), (4016, 31930), (4120, 31124), (4960, 25853), (5020, 25544), (6386, 20080), (7781, 16480), (8032, 15965), (8240, 15562), (10040, 12772)]