21995253

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4013}}^1$

素因数の和:4058

約数の個数: 32

約数和(自身を含む): 38534400

約数和(自身を除く): 16539147

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 189, 203, 261, 609, 783, 1827, 4013, 5481, 12039, 28091, 36117, 84273, 108351, 116377, 252819, 349131, 758457, 814639, 1047393, 2443917, 3142179, 7331751, 21995253]

約数ペア:

[(1, 21995253), (3, 7331751), (7, 3142179), (9, 2443917), (21, 1047393), (27, 814639), (29, 758457), (63, 349131), (87, 252819), (189, 116377), (203, 108351), (261, 84273), (609, 36117), (783, 28091), (1827, 12039), (4013, 5481)]