21808052

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{307}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 45534720

約数和(自身を除く): 23726668

約数列:

[1, 2, 4, 7, 14, 28, 43, 59, 86, 118, 172, 236, 301, 307, 413, 602, 614, 826, 1204, 1228, 1652, 2149, 2537, 4298, 5074, 8596, 10148, 13201, 17759, 18113, 26402, 35518, 36226, 52804, 71036, 72452, 92407, 126791, 184814, 253582, 369628, 507164, 778859, 1557718, 3115436, 5452013, 10904026, 21808052]

約数ペア:

[(1, 21808052), (2, 10904026), (4, 5452013), (7, 3115436), (14, 1557718), (28, 778859), (43, 507164), (59, 369628), (86, 253582), (118, 184814), (172, 126791), (236, 92407), (301, 72452), (307, 71036), (413, 52804), (602, 36226), (614, 35518), (826, 26402), (1204, 18113), (1228, 17759), (1652, 13201), (2149, 10148), (2537, 8596), (4298, 5074)]