1981510020

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{74887}}^1$

素因数の和:74919

約数の個数: 144

約数和(自身を含む): 7171274880

約数和(自身を除く): 5189764860

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 84, 90, 98, 105, 108, 126, 135, 140, 147, 180, 189, 196, 210, 245, 252, 270, 294, 315, 378, 420, 441, 490, 540, 588, 630, 735, 756, 882, 945, 980, 1260, 1323, 1470, 1764, 1890, 2205, 2646, 2940, 3780, 4410, 5292, 6615, 8820, 13230, 26460, 74887, 149774, 224661, 299548, 374435, 449322, 524209, 673983, 748870, 898644, 1048418, 1123305, 1347966, 1497740, 1572627, 2021949, 2096836, 2246610, 2621045, 2695932, 3145254, 3369915, 3669463, 4043898, 4493220, 4717881, 5242090, 6290508, 6739830, 7338926, 7863135, 8087796, 9435762, 10109745, 10484180, 11008389, 13479660, 14153643, 14677852, 15726270, 18347315, 18871524, 20219490, 22016778, 23589405, 28307286, 31452540, 33025167, 36694630, 40438980, 44033556, 47178810, 55041945, 56614572, 66050334, 70768215, 73389260, 94357620, 99075501, 110083890, 132100668, 141536430, 165125835, 198151002, 220167780, 283072860, 330251670, 396302004, 495377505, 660503340, 990755010, 1981510020]

約数ペア:

[(1, 1981510020), (2, 990755010), (3, 660503340), (4, 495377505), (5, 396302004), (6, 330251670), (7, 283072860), (9, 220167780), (10, 198151002), (12, 165125835), (14, 141536430), (15, 132100668), (18, 110083890), (20, 99075501), (21, 94357620), (27, 73389260), (28, 70768215), (30, 66050334), (35, 56614572), (36, 55041945), (42, 47178810), (45, 44033556), (49, 40438980), (54, 36694630), (60, 33025167), (63, 31452540), (70, 28307286), (84, 23589405), (90, 22016778), (98, 20219490), (105, 18871524), (108, 18347315), (126, 15726270), (135, 14677852), (140, 14153643), (147, 13479660), (180, 11008389), (189, 10484180), (196, 10109745), (210, 9435762), (245, 8087796), (252, 7863135), (270, 7338926), (294, 6739830), (315, 6290508), (378, 5242090), (420, 4717881), (441, 4493220), (490, 4043898), (540, 3669463), (588, 3369915), (630, 3145254), (735, 2695932), (756, 2621045), (882, 2246610), (945, 2096836), (980, 2021949), (1260, 1572627), (1323, 1497740), (1470, 1347966), (1764, 1123305), (1890, 1048418), (2205, 898644), (2646, 748870), (2940, 673983), (3780, 524209), (4410, 449322), (5292, 374435), (6615, 299548), (8820, 224661), (13230, 149774), (26460, 74887)]