71759180

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{449}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 154677600

約数和(自身を除く): 82918420

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 131, 244, 262, 305, 449, 524, 610, 655, 898, 1220, 1310, 1796, 2245, 2620, 4490, 7991, 8980, 15982, 27389, 31964, 39955, 54778, 58819, 79910, 109556, 117638, 136945, 159820, 235276, 273890, 294095, 547780, 588190, 1176380, 3587959, 7175918, 14351836, 17939795, 35879590, 71759180]

約数ペア:

[(1, 71759180), (2, 35879590), (4, 17939795), (5, 14351836), (10, 7175918), (20, 3587959), (61, 1176380), (122, 588190), (131, 547780), (244, 294095), (262, 273890), (305, 235276), (449, 159820), (524, 136945), (610, 117638), (655, 109556), (898, 79910), (1220, 58819), (1310, 54778), (1796, 39955), (2245, 31964), (2620, 27389), (4490, 15982), (7991, 8980)]