21712355

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:323

約数の個数: 32

約数和(自身を含む): 31021056

約数和(自身を除く): 9308701

約数列:

[1, 5, 7, 35, 47, 67, 197, 235, 329, 335, 469, 985, 1379, 1645, 2345, 3149, 6895, 9259, 13199, 15745, 22043, 46295, 64813, 65995, 92393, 110215, 324065, 461965, 620353, 3101765, 4342471, 21712355]

約数ペア:

[(1, 21712355), (5, 4342471), (7, 3101765), (35, 620353), (47, 461965), (67, 324065), (197, 110215), (235, 92393), (329, 65995), (335, 64813), (469, 46295), (985, 22043), (1379, 15745), (1645, 13199), (2345, 9259), (3149, 6895)]