21205364

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 40567296

約数和(自身を除く): 19361932

約数列:

[1, 2, 4, 31, 41, 43, 62, 82, 86, 97, 124, 164, 172, 194, 388, 1271, 1333, 1763, 2542, 2666, 3007, 3526, 3977, 4171, 5084, 5332, 6014, 7052, 7954, 8342, 12028, 15908, 16684, 54653, 109306, 123287, 129301, 171011, 218612, 246574, 258602, 342022, 493148, 517204, 684044, 5301341, 10602682, 21205364]

約数ペア:

[(1, 21205364), (2, 10602682), (4, 5301341), (31, 684044), (41, 517204), (43, 493148), (62, 342022), (82, 258602), (86, 246574), (97, 218612), (124, 171011), (164, 129301), (172, 123287), (194, 109306), (388, 54653), (1271, 16684), (1333, 15908), (1763, 12028), (2542, 8342), (2666, 7954), (3007, 7052), (3526, 6014), (3977, 5332), (4171, 5084)]