31225257

素因数分解:

$3^6\times 7^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:265

約数の個数: 56

約数和(自身を含む): 55611840

約数和(自身を除く): 24386583

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 211, 243, 261, 567, 609, 633, 729, 783, 1477, 1701, 1827, 1899, 2349, 4431, 5103, 5481, 5697, 6119, 7047, 13293, 16443, 17091, 18357, 21141, 39879, 42833, 49329, 51273, 55071, 119637, 128499, 147987, 153819, 165213, 358911, 385497, 495639, 1076733, 1156491, 1486917, 3469473, 4460751, 10408419, 31225257]

約数ペア:

[(1, 31225257), (3, 10408419), (7, 4460751), (9, 3469473), (21, 1486917), (27, 1156491), (29, 1076733), (63, 495639), (81, 385497), (87, 358911), (189, 165213), (203, 153819), (211, 147987), (243, 128499), (261, 119637), (567, 55071), (609, 51273), (633, 49329), (729, 42833), (783, 39879), (1477, 21141), (1701, 18357), (1827, 17091), (1899, 16443), (2349, 13293), (4431, 7047), (5103, 6119), (5481, 5697)]