81554320

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{349}}^1$

素因数の和:512

約数の個数: 80

約数和(自身を含む): 199987200

約数和(自身を除く): 118432880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 127, 184, 230, 254, 349, 368, 460, 508, 635, 698, 920, 1016, 1270, 1396, 1745, 1840, 2032, 2540, 2792, 2921, 3490, 5080, 5584, 5842, 6980, 8027, 10160, 11684, 13960, 14605, 16054, 23368, 27920, 29210, 32108, 40135, 44323, 46736, 58420, 64216, 80270, 88646, 116840, 128432, 160540, 177292, 221615, 233680, 321080, 354584, 443230, 642160, 709168, 886460, 1019429, 1772920, 2038858, 3545840, 4077716, 5097145, 8155432, 10194290, 16310864, 20388580, 40777160, 81554320]

約数ペア:

[(1, 81554320), (2, 40777160), (4, 20388580), (5, 16310864), (8, 10194290), (10, 8155432), (16, 5097145), (20, 4077716), (23, 3545840), (40, 2038858), (46, 1772920), (80, 1019429), (92, 886460), (115, 709168), (127, 642160), (184, 443230), (230, 354584), (254, 321080), (349, 233680), (368, 221615), (460, 177292), (508, 160540), (635, 128432), (698, 116840), (920, 88646), (1016, 80270), (1270, 64216), (1396, 58420), (1745, 46736), (1840, 44323), (2032, 40135), (2540, 32108), (2792, 29210), (2921, 27920), (3490, 23368), (5080, 16054), (5584, 14605), (5842, 13960), (6980, 11684), (8027, 10160)]