21522160

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{661}}^1$

素因数の和:722

約数の個数: 80

約数和(自身を含む): 56148192

約数和(自身を除く): 34626032

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 37, 40, 44, 55, 74, 80, 88, 110, 148, 176, 185, 220, 296, 370, 407, 440, 592, 661, 740, 814, 880, 1322, 1480, 1628, 2035, 2644, 2960, 3256, 3305, 4070, 5288, 6512, 6610, 7271, 8140, 10576, 13220, 14542, 16280, 24457, 26440, 29084, 32560, 36355, 48914, 52880, 58168, 72710, 97828, 116336, 122285, 145420, 195656, 244570, 269027, 290840, 391312, 489140, 538054, 581680, 978280, 1076108, 1345135, 1956560, 2152216, 2690270, 4304432, 5380540, 10761080, 21522160]

約数ペア:

[(1, 21522160), (2, 10761080), (4, 5380540), (5, 4304432), (8, 2690270), (10, 2152216), (11, 1956560), (16, 1345135), (20, 1076108), (22, 978280), (37, 581680), (40, 538054), (44, 489140), (55, 391312), (74, 290840), (80, 269027), (88, 244570), (110, 195656), (148, 145420), (176, 122285), (185, 116336), (220, 97828), (296, 72710), (370, 58168), (407, 52880), (440, 48914), (592, 36355), (661, 32560), (740, 29084), (814, 26440), (880, 24457), (1322, 16280), (1480, 14542), (1628, 13220), (2035, 10576), (2644, 8140), (2960, 7271), (3256, 6610), (3305, 6512), (4070, 5288)]