261943180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1\times {\mathrm{1559}}^1$

素因数の和:1870

約数の個数: 48

約数和(自身を含む): 570286080

約数和(自身を除く): 308342900

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 271, 310, 542, 620, 1084, 1355, 1559, 2710, 3118, 5420, 6236, 7795, 8401, 15590, 16802, 31180, 33604, 42005, 48329, 84010, 96658, 168020, 193316, 241645, 422489, 483290, 844978, 966580, 1689956, 2112445, 4224890, 8449780, 13097159, 26194318, 52388636, 65485795, 130971590, 261943180]

約数ペア:

[(1, 261943180), (2, 130971590), (4, 65485795), (5, 52388636), (10, 26194318), (20, 13097159), (31, 8449780), (62, 4224890), (124, 2112445), (155, 1689956), (271, 966580), (310, 844978), (542, 483290), (620, 422489), (1084, 241645), (1355, 193316), (1559, 168020), (2710, 96658), (3118, 84010), (5420, 48329), (6236, 42005), (7795, 33604), (8401, 31180), (15590, 16802)]