18911981036

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1153}}^1\times {\mathrm{5171}}^1$

素因数の和:6402

約数の個数: 48

約数和(自身を含む): 36264533088

約数和(自身を除く): 17352552052

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 244, 793, 1153, 1586, 2306, 3172, 4612, 5171, 10342, 14989, 20684, 29978, 59956, 67223, 70333, 134446, 140666, 268892, 281332, 315431, 630862, 914329, 1261724, 1828658, 3657316, 4100603, 5962163, 8201206, 11924326, 16402412, 23848652, 77508119, 155016238, 310032476, 363691943, 727383886, 1454767772, 4727995259, 9455990518, 18911981036]

約数ペア:

[(1, 18911981036), (2, 9455990518), (4, 4727995259), (13, 1454767772), (26, 727383886), (52, 363691943), (61, 310032476), (122, 155016238), (244, 77508119), (793, 23848652), (1153, 16402412), (1586, 11924326), (2306, 8201206), (3172, 5962163), (4612, 4100603), (5171, 3657316), (10342, 1828658), (14989, 1261724), (20684, 914329), (29978, 630862), (59956, 315431), (67223, 281332), (70333, 268892), (134446, 140666)]