255757280

素因数分解:

$2^5\times 5^1\times {\mathrm{991}}^1\times {\mathrm{1613}}^1$

素因数の和:2619

約数の個数: 48

約数和(自身を含む): 605211264

約数和(自身を除く): 349453984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 991, 1613, 1982, 3226, 3964, 4955, 6452, 7928, 8065, 9910, 12904, 15856, 16130, 19820, 25808, 31712, 32260, 39640, 51616, 64520, 79280, 129040, 158560, 258080, 1598483, 3196966, 6393932, 7992415, 12787864, 15984830, 25575728, 31969660, 51151456, 63939320, 127878640, 255757280]

約数ペア:

[(1, 255757280), (2, 127878640), (4, 63939320), (5, 51151456), (8, 31969660), (10, 25575728), (16, 15984830), (20, 12787864), (32, 7992415), (40, 6393932), (80, 3196966), (160, 1598483), (991, 258080), (1613, 158560), (1982, 129040), (3226, 79280), (3964, 64520), (4955, 51616), (6452, 39640), (7928, 32260), (8065, 31712), (9910, 25808), (12904, 19820), (15856, 16130)]