18887409920

素因数分解:

$2^8\times 5^1\times {\mathrm{2281}}^1\times {\mathrm{6469}}^1$

素因数の和:8771

約数の個数: 72

約数和(自身を含む): 45268079640

約数和(自身を除く): 26380669720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 2281, 4562, 6469, 9124, 11405, 12938, 18248, 22810, 25876, 32345, 36496, 45620, 51752, 64690, 72992, 91240, 103504, 129380, 145984, 182480, 207008, 258760, 291968, 364960, 414016, 517520, 583936, 729920, 828032, 1035040, 1459840, 1656064, 2070080, 2919680, 4140160, 8280320, 14755789, 29511578, 59023156, 73778945, 118046312, 147557890, 236092624, 295115780, 472185248, 590231560, 944370496, 1180463120, 1888740992, 2360926240, 3777481984, 4721852480, 9443704960, 18887409920]

約数ペア:

[(1, 18887409920), (2, 9443704960), (4, 4721852480), (5, 3777481984), (8, 2360926240), (10, 1888740992), (16, 1180463120), (20, 944370496), (32, 590231560), (40, 472185248), (64, 295115780), (80, 236092624), (128, 147557890), (160, 118046312), (256, 73778945), (320, 59023156), (640, 29511578), (1280, 14755789), (2281, 8280320), (4562, 4140160), (6469, 2919680), (9124, 2070080), (11405, 1656064), (12938, 1459840), (18248, 1035040), (22810, 828032), (25876, 729920), (32345, 583936), (36496, 517520), (45620, 414016), (51752, 364960), (64690, 291968), (72992, 258760), (91240, 207008), (103504, 182480), (129380, 145984)]