81530820

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{21569}}^1$

素因数の和:21594

約数の個数: 96

約数和(自身を含む): 289900800

約数和(自身を除く): 208369980

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, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 21569, 43138, 64707, 86276, 107845, 129414, 150983, 194121, 215690, 258828, 301966, 323535, 388242, 431380, 452949, 582363, 603932, 647070, 754915, 776484, 905898, 970605, 1164726, 1294140, 1358847, 1509830, 1811796, 1941210, 2264745, 2329452, 2717694, 2911815, 3019660, 3882420, 4076541, 4529490, 5435388, 5823630, 6794235, 8153082, 9058980, 11647260, 13588470, 16306164, 20382705, 27176940, 40765410, 81530820]

約数ペア:

[(1, 81530820), (2, 40765410), (3, 27176940), (4, 20382705), (5, 16306164), (6, 13588470), (7, 11647260), (9, 9058980), (10, 8153082), (12, 6794235), (14, 5823630), (15, 5435388), (18, 4529490), (20, 4076541), (21, 3882420), (27, 3019660), (28, 2911815), (30, 2717694), (35, 2329452), (36, 2264745), (42, 1941210), (45, 1811796), (54, 1509830), (60, 1358847), (63, 1294140), (70, 1164726), (84, 970605), (90, 905898), (105, 776484), (108, 754915), (126, 647070), (135, 603932), (140, 582363), (180, 452949), (189, 431380), (210, 388242), (252, 323535), (270, 301966), (315, 258828), (378, 215690), (420, 194121), (540, 150983), (630, 129414), (756, 107845), (945, 86276), (1260, 64707), (1890, 43138), (3780, 21569)]