21493168

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2549}}^1$

素因数の和:2605

約数の個数: 40

約数和(自身を含む): 45532800

約数和(自身を除く): 24039632

約数列:

[1, 2, 4, 8, 16, 17, 31, 34, 62, 68, 124, 136, 248, 272, 496, 527, 1054, 2108, 2549, 4216, 5098, 8432, 10196, 20392, 40784, 43333, 79019, 86666, 158038, 173332, 316076, 346664, 632152, 693328, 1264304, 1343323, 2686646, 5373292, 10746584, 21493168]

約数ペア:

[(1, 21493168), (2, 10746584), (4, 5373292), (8, 2686646), (16, 1343323), (17, 1264304), (31, 693328), (34, 632152), (62, 346664), (68, 316076), (124, 173332), (136, 158038), (248, 86666), (272, 79019), (496, 43333), (527, 40784), (1054, 20392), (2108, 10196), (2549, 8432), (4216, 5098)]