21885440

素因数分解:

$2^9\times 5^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:209

約数の個数: 80

約数和(自身を含む): 53621568

約数和(自身を除く): 31736128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 83, 103, 128, 160, 166, 206, 256, 320, 332, 412, 415, 512, 515, 640, 664, 824, 830, 1030, 1280, 1328, 1648, 1660, 2060, 2560, 2656, 3296, 3320, 4120, 5312, 6592, 6640, 8240, 8549, 10624, 13184, 13280, 16480, 17098, 21248, 26368, 26560, 32960, 34196, 42496, 42745, 52736, 53120, 65920, 68392, 85490, 106240, 131840, 136784, 170980, 212480, 263680, 273568, 341960, 547136, 683920, 1094272, 1367840, 2188544, 2735680, 4377088, 5471360, 10942720, 21885440]

約数ペア:

[(1, 21885440), (2, 10942720), (4, 5471360), (5, 4377088), (8, 2735680), (10, 2188544), (16, 1367840), (20, 1094272), (32, 683920), (40, 547136), (64, 341960), (80, 273568), (83, 263680), (103, 212480), (128, 170980), (160, 136784), (166, 131840), (206, 106240), (256, 85490), (320, 68392), (332, 65920), (412, 53120), (415, 52736), (512, 42745), (515, 42496), (640, 34196), (664, 32960), (824, 26560), (830, 26368), (1030, 21248), (1280, 17098), (1328, 16480), (1648, 13280), (1660, 13184), (2060, 10624), (2560, 8549), (2656, 8240), (3296, 6640), (3320, 6592), (4120, 5312)]