80510720

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2029}}^1$

素因数の和:2081

約数の個数: 72

約数和(自身を含む): 199167360

約数和(自身を除く): 118656640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2029, 2480, 3968, 4058, 4960, 7936, 8116, 9920, 10145, 16232, 19840, 20290, 32464, 39680, 40580, 62899, 64928, 81160, 125798, 129856, 162320, 251596, 259712, 314495, 324640, 503192, 519424, 628990, 649280, 1006384, 1257980, 1298560, 2012768, 2515960, 2597120, 4025536, 5031920, 8051072, 10063840, 16102144, 20127680, 40255360, 80510720]

約数ペア:

[(1, 80510720), (2, 40255360), (4, 20127680), (5, 16102144), (8, 10063840), (10, 8051072), (16, 5031920), (20, 4025536), (31, 2597120), (32, 2515960), (40, 2012768), (62, 1298560), (64, 1257980), (80, 1006384), (124, 649280), (128, 628990), (155, 519424), (160, 503192), (248, 324640), (256, 314495), (310, 259712), (320, 251596), (496, 162320), (620, 129856), (640, 125798), (992, 81160), (1240, 64928), (1280, 62899), (1984, 40580), (2029, 39680), (2480, 32464), (3968, 20290), (4058, 19840), (4960, 16232), (7936, 10145), (8116, 9920)]