81212820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{104119}}^1$

素因数の和:104144

約数の個数: 48

約数和(自身を含む): 244890240

約数和(自身を除く): 163677420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 104119, 208238, 312357, 416476, 520595, 624714, 1041190, 1249428, 1353547, 1561785, 2082380, 2707094, 3123570, 4060641, 5414188, 6247140, 6767735, 8121282, 13535470, 16242564, 20303205, 27070940, 40606410, 81212820]

約数ペア:

[(1, 81212820), (2, 40606410), (3, 27070940), (4, 20303205), (5, 16242564), (6, 13535470), (10, 8121282), (12, 6767735), (13, 6247140), (15, 5414188), (20, 4060641), (26, 3123570), (30, 2707094), (39, 2082380), (52, 1561785), (60, 1353547), (65, 1249428), (78, 1041190), (130, 624714), (156, 520595), (195, 416476), (260, 312357), (390, 208238), (780, 104119)]