81422720

素因数分解:

$2^7\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:196

約数の個数: 128

約数和(自身を含む): 208202400

約数和(自身を除く): 126779680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 41, 58, 64, 80, 82, 107, 116, 128, 145, 160, 164, 205, 214, 232, 290, 320, 328, 410, 428, 464, 535, 580, 640, 656, 820, 856, 928, 1070, 1160, 1189, 1312, 1640, 1712, 1856, 2140, 2320, 2378, 2624, 3103, 3280, 3424, 3712, 4280, 4387, 4640, 4756, 5248, 5945, 6206, 6560, 6848, 8560, 8774, 9280, 9512, 11890, 12412, 13120, 13696, 15515, 17120, 17548, 18560, 19024, 21935, 23780, 24824, 26240, 31030, 34240, 35096, 38048, 43870, 47560, 49648, 62060, 68480, 70192, 76096, 87740, 95120, 99296, 124120, 127223, 140384, 152192, 175480, 190240, 198592, 248240, 254446, 280768, 350960, 380480, 397184, 496480, 508892, 561536, 636115, 701920, 760960, 992960, 1017784, 1272230, 1403840, 1985920, 2035568, 2544460, 2807680, 4071136, 5088920, 8142272, 10177840, 16284544, 20355680, 40711360, 81422720]

約数ペア:

[(1, 81422720), (2, 40711360), (4, 20355680), (5, 16284544), (8, 10177840), (10, 8142272), (16, 5088920), (20, 4071136), (29, 2807680), (32, 2544460), (40, 2035568), (41, 1985920), (58, 1403840), (64, 1272230), (80, 1017784), (82, 992960), (107, 760960), (116, 701920), (128, 636115), (145, 561536), (160, 508892), (164, 496480), (205, 397184), (214, 380480), (232, 350960), (290, 280768), (320, 254446), (328, 248240), (410, 198592), (428, 190240), (464, 175480), (535, 152192), (580, 140384), (640, 127223), (656, 124120), (820, 99296), (856, 95120), (928, 87740), (1070, 76096), (1160, 70192), (1189, 68480), (1312, 62060), (1640, 49648), (1712, 47560), (1856, 43870), (2140, 38048), (2320, 35096), (2378, 34240), (2624, 31030), (3103, 26240), (3280, 24824), (3424, 23780), (3712, 21935), (4280, 19024), (4387, 18560), (4640, 17548), (4756, 17120), (5248, 15515), (5945, 13696), (6206, 13120), (6560, 12412), (6848, 11890), (8560, 9512), (8774, 9280)]