81907140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:242

約数の個数: 192

約数和(自身を含む): 279982080

約数和(自身を除く): 198074940

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 23, 28, 30, 35, 42, 46, 60, 61, 69, 70, 84, 92, 105, 115, 122, 138, 139, 140, 161, 183, 210, 230, 244, 276, 278, 305, 322, 345, 366, 417, 420, 427, 460, 483, 556, 610, 644, 690, 695, 732, 805, 834, 854, 915, 966, 973, 1220, 1281, 1380, 1390, 1403, 1610, 1668, 1708, 1830, 1932, 1946, 2085, 2135, 2415, 2562, 2780, 2806, 2919, 3197, 3220, 3660, 3892, 4170, 4209, 4270, 4830, 4865, 5124, 5612, 5838, 6394, 6405, 7015, 8340, 8418, 8479, 8540, 9591, 9660, 9730, 9821, 11676, 12788, 12810, 14030, 14595, 15985, 16836, 16958, 19182, 19460, 19642, 21045, 22379, 25437, 25620, 28060, 29190, 29463, 31970, 33916, 38364, 39284, 42090, 42395, 44758, 47955, 49105, 50874, 58380, 58926, 59353, 63940, 67137, 84180, 84790, 89516, 95910, 98210, 101748, 111895, 117852, 118706, 127185, 134274, 147315, 169580, 178059, 191820, 195017, 196420, 223790, 237412, 254370, 268548, 294630, 296765, 335685, 356118, 390034, 447580, 508740, 585051, 589260, 593530, 671370, 712236, 780068, 890295, 975085, 1170102, 1187060, 1342740, 1365119, 1780590, 1950170, 2340204, 2730238, 2925255, 3561180, 3900340, 4095357, 5460476, 5850510, 6825595, 8190714, 11701020, 13651190, 16381428, 20476785, 27302380, 40953570, 81907140]

約数ペア:

[(1, 81907140), (2, 40953570), (3, 27302380), (4, 20476785), (5, 16381428), (6, 13651190), (7, 11701020), (10, 8190714), (12, 6825595), (14, 5850510), (15, 5460476), (20, 4095357), (21, 3900340), (23, 3561180), (28, 2925255), (30, 2730238), (35, 2340204), (42, 1950170), (46, 1780590), (60, 1365119), (61, 1342740), (69, 1187060), (70, 1170102), (84, 975085), (92, 890295), (105, 780068), (115, 712236), (122, 671370), (138, 593530), (139, 589260), (140, 585051), (161, 508740), (183, 447580), (210, 390034), (230, 356118), (244, 335685), (276, 296765), (278, 294630), (305, 268548), (322, 254370), (345, 237412), (366, 223790), (417, 196420), (420, 195017), (427, 191820), (460, 178059), (483, 169580), (556, 147315), (610, 134274), (644, 127185), (690, 118706), (695, 117852), (732, 111895), (805, 101748), (834, 98210), (854, 95910), (915, 89516), (966, 84790), (973, 84180), (1220, 67137), (1281, 63940), (1380, 59353), (1390, 58926), (1403, 58380), (1610, 50874), (1668, 49105), (1708, 47955), (1830, 44758), (1932, 42395), (1946, 42090), (2085, 39284), (2135, 38364), (2415, 33916), (2562, 31970), (2780, 29463), (2806, 29190), (2919, 28060), (3197, 25620), (3220, 25437), (3660, 22379), (3892, 21045), (4170, 19642), (4209, 19460), (4270, 19182), (4830, 16958), (4865, 16836), (5124, 15985), (5612, 14595), (5838, 14030), (6394, 12810), (6405, 12788), (7015, 11676), (8340, 9821), (8418, 9730), (8479, 9660), (8540, 9591)]