20820227900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{313}}^1\times {\mathrm{28921}}^1$

素因数の和:29271

約数の個数: 72

約数和(自身を含む): 47296493664

約数和(自身を除く): 26476265764

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 92, 100, 115, 230, 313, 460, 575, 626, 1150, 1252, 1565, 2300, 3130, 6260, 7199, 7825, 14398, 15650, 28796, 28921, 31300, 35995, 57842, 71990, 115684, 143980, 144605, 179975, 289210, 359950, 578420, 665183, 719900, 723025, 1330366, 1446050, 2660732, 2892100, 3325915, 6651830, 9052273, 13303660, 16629575, 18104546, 33259150, 36209092, 45261365, 66518300, 90522730, 181045460, 208202279, 226306825, 416404558, 452613650, 832809116, 905227300, 1041011395, 2082022790, 4164045580, 5205056975, 10410113950, 20820227900]

約数ペア:

[(1, 20820227900), (2, 10410113950), (4, 5205056975), (5, 4164045580), (10, 2082022790), (20, 1041011395), (23, 905227300), (25, 832809116), (46, 452613650), (50, 416404558), (92, 226306825), (100, 208202279), (115, 181045460), (230, 90522730), (313, 66518300), (460, 45261365), (575, 36209092), (626, 33259150), (1150, 18104546), (1252, 16629575), (1565, 13303660), (2300, 9052273), (3130, 6651830), (6260, 3325915), (7199, 2892100), (7825, 2660732), (14398, 1446050), (15650, 1330366), (28796, 723025), (28921, 719900), (31300, 665183), (35995, 578420), (57842, 359950), (71990, 289210), (115684, 179975), (143980, 144605)]