21521042080

素因数分解:

$2^5\times 5^1\times {\mathrm{659}}^1\times {\mathrm{204107}}^1$

素因数の和:204781

約数の個数: 48

約数和(自身を含む): 50920863840

約数和(自身を除く): 29399821760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 659, 1318, 2636, 3295, 5272, 6590, 10544, 13180, 21088, 26360, 52720, 105440, 204107, 408214, 816428, 1020535, 1632856, 2041070, 3265712, 4082140, 6531424, 8164280, 16328560, 32657120, 134506513, 269013026, 538026052, 672532565, 1076052104, 1345065130, 2152104208, 2690130260, 4304208416, 5380260520, 10760521040, 21521042080]

約数ペア:

[(1, 21521042080), (2, 10760521040), (4, 5380260520), (5, 4304208416), (8, 2690130260), (10, 2152104208), (16, 1345065130), (20, 1076052104), (32, 672532565), (40, 538026052), (80, 269013026), (160, 134506513), (659, 32657120), (1318, 16328560), (2636, 8164280), (3295, 6531424), (5272, 4082140), (6590, 3265712), (10544, 2041070), (13180, 1632856), (21088, 1020535), (26360, 816428), (52720, 408214), (105440, 204107)]