18784360720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1303}}^1\times {\mathrm{5813}}^1$

素因数の和:7160

約数の個数: 80

約数和(自身を含む): 45124826112

約数和(自身を除く): 26340465392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 1303, 2480, 2606, 5212, 5813, 6515, 10424, 11626, 13030, 20848, 23252, 26060, 29065, 40393, 46504, 52120, 58130, 80786, 93008, 104240, 116260, 161572, 180203, 201965, 232520, 323144, 360406, 403930, 465040, 646288, 720812, 807860, 901015, 1441624, 1615720, 1802030, 2883248, 3231440, 3604060, 7208120, 7574339, 14416240, 15148678, 30297356, 37871695, 60594712, 75743390, 121189424, 151486780, 234804509, 302973560, 469609018, 605947120, 939218036, 1174022545, 1878436072, 2348045090, 3756872144, 4696090180, 9392180360, 18784360720]

約数ペア:

[(1, 18784360720), (2, 9392180360), (4, 4696090180), (5, 3756872144), (8, 2348045090), (10, 1878436072), (16, 1174022545), (20, 939218036), (31, 605947120), (40, 469609018), (62, 302973560), (80, 234804509), (124, 151486780), (155, 121189424), (248, 75743390), (310, 60594712), (496, 37871695), (620, 30297356), (1240, 15148678), (1303, 14416240), (2480, 7574339), (2606, 7208120), (5212, 3604060), (5813, 3231440), (6515, 2883248), (10424, 1802030), (11626, 1615720), (13030, 1441624), (20848, 901015), (23252, 807860), (26060, 720812), (29065, 646288), (40393, 465040), (46504, 403930), (52120, 360406), (58130, 323144), (80786, 232520), (93008, 201965), (104240, 180203), (116260, 161572)]