20100555

素因数分解:

$3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1601}}^1$

素因数の和:1649

約数の個数: 40

約数和(自身を含む): 37217664

約数和(自身を除く): 17117109

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 81, 93, 135, 155, 279, 405, 465, 837, 1395, 1601, 2511, 4185, 4803, 8005, 12555, 14409, 24015, 43227, 49631, 72045, 129681, 148893, 216135, 248155, 446679, 648405, 744465, 1340037, 2233395, 4020111, 6700185, 20100555]

約数ペア:

[(1, 20100555), (3, 6700185), (5, 4020111), (9, 2233395), (15, 1340037), (27, 744465), (31, 648405), (45, 446679), (81, 248155), (93, 216135), (135, 148893), (155, 129681), (279, 72045), (405, 49631), (465, 43227), (837, 24015), (1395, 14409), (1601, 12555), (2511, 8005), (4185, 4803)]