28373840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1697}}^1$

素因数の和:1740

約数の個数: 80

約数和(自身を含む): 75798720

約数和(自身を除く): 47424880

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 152, 176, 190, 209, 220, 304, 380, 418, 440, 760, 836, 880, 1045, 1520, 1672, 1697, 2090, 3344, 3394, 4180, 6788, 8360, 8485, 13576, 16720, 16970, 18667, 27152, 32243, 33940, 37334, 64486, 67880, 74668, 93335, 128972, 135760, 149336, 161215, 186670, 257944, 298672, 322430, 354673, 373340, 515888, 644860, 709346, 746680, 1289720, 1418692, 1493360, 1773365, 2579440, 2837384, 3546730, 5674768, 7093460, 14186920, 28373840]

約数ペア:

[(1, 28373840), (2, 14186920), (4, 7093460), (5, 5674768), (8, 3546730), (10, 2837384), (11, 2579440), (16, 1773365), (19, 1493360), (20, 1418692), (22, 1289720), (38, 746680), (40, 709346), (44, 644860), (55, 515888), (76, 373340), (80, 354673), (88, 322430), (95, 298672), (110, 257944), (152, 186670), (176, 161215), (190, 149336), (209, 135760), (220, 128972), (304, 93335), (380, 74668), (418, 67880), (440, 64486), (760, 37334), (836, 33940), (880, 32243), (1045, 27152), (1520, 18667), (1672, 16970), (1697, 16720), (2090, 13576), (3344, 8485), (3394, 8360), (4180, 6788)]