21080640

素因数分解:

$2^6\times 3^1\times 5^1\times 7^1\times {\mathrm{3137}}^1$

素因数の和:3164

約数の個数: 112

約数和(自身を含む): 76516992

約数和(自身を除く): 55436352

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 192, 210, 224, 240, 280, 320, 336, 420, 448, 480, 560, 672, 840, 960, 1120, 1344, 1680, 2240, 3137, 3360, 6274, 6720, 9411, 12548, 15685, 18822, 21959, 25096, 31370, 37644, 43918, 47055, 50192, 62740, 65877, 75288, 87836, 94110, 100384, 109795, 125480, 131754, 150576, 175672, 188220, 200768, 219590, 250960, 263508, 301152, 329385, 351344, 376440, 439180, 501920, 527016, 602304, 658770, 702688, 752880, 878360, 1003840, 1054032, 1317540, 1405376, 1505760, 1756720, 2108064, 2635080, 3011520, 3513440, 4216128, 5270160, 7026880, 10540320, 21080640]

約数ペア:

[(1, 21080640), (2, 10540320), (3, 7026880), (4, 5270160), (5, 4216128), (6, 3513440), (7, 3011520), (8, 2635080), (10, 2108064), (12, 1756720), (14, 1505760), (15, 1405376), (16, 1317540), (20, 1054032), (21, 1003840), (24, 878360), (28, 752880), (30, 702688), (32, 658770), (35, 602304), (40, 527016), (42, 501920), (48, 439180), (56, 376440), (60, 351344), (64, 329385), (70, 301152), (80, 263508), (84, 250960), (96, 219590), (105, 200768), (112, 188220), (120, 175672), (140, 150576), (160, 131754), (168, 125480), (192, 109795), (210, 100384), (224, 94110), (240, 87836), (280, 75288), (320, 65877), (336, 62740), (420, 50192), (448, 47055), (480, 43918), (560, 37644), (672, 31370), (840, 25096), (960, 21959), (1120, 18822), (1344, 15685), (1680, 12548), (2240, 9411), (3137, 6720), (3360, 6274)]