21223696

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{167}}^1$

素因数の和:248

約数の個数: 60

約数和(自身を含む): 45747072

約数和(自身を除く): 24523376

約数列:

[1, 2, 4, 8, 13, 16, 26, 47, 52, 94, 104, 167, 169, 188, 208, 334, 338, 376, 611, 668, 676, 752, 1222, 1336, 1352, 2171, 2444, 2672, 2704, 4342, 4888, 7849, 7943, 8684, 9776, 15698, 15886, 17368, 28223, 31396, 31772, 34736, 56446, 62792, 63544, 102037, 112892, 125584, 127088, 204074, 225784, 408148, 451568, 816296, 1326481, 1632592, 2652962, 5305924, 10611848, 21223696]

約数ペア:

[(1, 21223696), (2, 10611848), (4, 5305924), (8, 2652962), (13, 1632592), (16, 1326481), (26, 816296), (47, 451568), (52, 408148), (94, 225784), (104, 204074), (167, 127088), (169, 125584), (188, 112892), (208, 102037), (334, 63544), (338, 62792), (376, 56446), (611, 34736), (668, 31772), (676, 31396), (752, 28223), (1222, 17368), (1336, 15886), (1352, 15698), (2171, 9776), (2444, 8684), (2672, 7943), (2704, 7849), (4342, 4888)]