213891559

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{751}}^1$

素因数の和:871

約数の個数: 32

約数和(自身を含む): 268554240

約数和(自身を除く): 54662681

約数列:

[1, 7, 23, 29, 61, 161, 203, 427, 667, 751, 1403, 1769, 4669, 5257, 9821, 12383, 17273, 21779, 40687, 45811, 120911, 152453, 284809, 320677, 500917, 1053653, 1328519, 3506419, 7375571, 9299633, 30555937, 213891559]

約数ペア:

[(1, 213891559), (7, 30555937), (23, 9299633), (29, 7375571), (61, 3506419), (161, 1328519), (203, 1053653), (427, 500917), (667, 320677), (751, 284809), (1403, 152453), (1769, 120911), (4669, 45811), (5257, 40687), (9821, 21779), (12383, 17273)]