19909680

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{1693}}^1$

素因数の和:1723

約数の個数: 120

約数和(自身を含む): 71839152

約数和(自身を除く): 51929472

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1680, 1693, 1960, 2352, 2940, 3386, 3920, 5079, 5880, 6772, 8465, 10158, 11760, 11851, 13544, 16930, 20316, 23702, 25395, 27088, 33860, 35553, 40632, 47404, 50790, 59255, 67720, 71106, 81264, 82957, 94808, 101580, 118510, 135440, 142212, 165914, 177765, 189616, 203160, 237020, 248871, 284424, 331828, 355530, 406320, 414785, 474040, 497742, 568848, 663656, 711060, 829570, 948080, 995484, 1244355, 1327312, 1422120, 1659140, 1990968, 2488710, 2844240, 3318280, 3981936, 4977420, 6636560, 9954840, 19909680]

約数ペア:

[(1, 19909680), (2, 9954840), (3, 6636560), (4, 4977420), (5, 3981936), (6, 3318280), (7, 2844240), (8, 2488710), (10, 1990968), (12, 1659140), (14, 1422120), (15, 1327312), (16, 1244355), (20, 995484), (21, 948080), (24, 829570), (28, 711060), (30, 663656), (35, 568848), (40, 497742), (42, 474040), (48, 414785), (49, 406320), (56, 355530), (60, 331828), (70, 284424), (80, 248871), (84, 237020), (98, 203160), (105, 189616), (112, 177765), (120, 165914), (140, 142212), (147, 135440), (168, 118510), (196, 101580), (210, 94808), (240, 82957), (245, 81264), (280, 71106), (294, 67720), (336, 59255), (392, 50790), (420, 47404), (490, 40632), (560, 35553), (588, 33860), (735, 27088), (784, 25395), (840, 23702), (980, 20316), (1176, 16930), (1470, 13544), (1680, 11851), (1693, 11760), (1960, 10158), (2352, 8465), (2940, 6772), (3386, 5880), (3920, 5079)]