20545800

素因数分解:

$2^3\times 3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{283}}^1$

素因数の和:324

約数の個数: 144

約数和(自身を含む): 70255920

約数和(自身を除く): 49710120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 25, 30, 33, 40, 44, 50, 55, 60, 66, 75, 88, 100, 110, 120, 121, 132, 150, 165, 200, 220, 242, 264, 275, 283, 300, 330, 363, 440, 484, 550, 566, 600, 605, 660, 726, 825, 849, 968, 1100, 1132, 1210, 1320, 1415, 1452, 1650, 1698, 1815, 2200, 2264, 2420, 2830, 2904, 3025, 3113, 3300, 3396, 3630, 4245, 4840, 5660, 6050, 6226, 6600, 6792, 7075, 7260, 8490, 9075, 9339, 11320, 12100, 12452, 14150, 14520, 15565, 16980, 18150, 18678, 21225, 24200, 24904, 28300, 31130, 33960, 34243, 36300, 37356, 42450, 46695, 56600, 62260, 68486, 72600, 74712, 77825, 84900, 93390, 102729, 124520, 136972, 155650, 169800, 171215, 186780, 205458, 233475, 273944, 311300, 342430, 373560, 410916, 466950, 513645, 622600, 684860, 821832, 856075, 933900, 1027290, 1369720, 1712150, 1867800, 2054580, 2568225, 3424300, 4109160, 5136450, 6848600, 10272900, 20545800]

約数ペア:

[(1, 20545800), (2, 10272900), (3, 6848600), (4, 5136450), (5, 4109160), (6, 3424300), (8, 2568225), (10, 2054580), (11, 1867800), (12, 1712150), (15, 1369720), (20, 1027290), (22, 933900), (24, 856075), (25, 821832), (30, 684860), (33, 622600), (40, 513645), (44, 466950), (50, 410916), (55, 373560), (60, 342430), (66, 311300), (75, 273944), (88, 233475), (100, 205458), (110, 186780), (120, 171215), (121, 169800), (132, 155650), (150, 136972), (165, 124520), (200, 102729), (220, 93390), (242, 84900), (264, 77825), (275, 74712), (283, 72600), (300, 68486), (330, 62260), (363, 56600), (440, 46695), (484, 42450), (550, 37356), (566, 36300), (600, 34243), (605, 33960), (660, 31130), (726, 28300), (825, 24904), (849, 24200), (968, 21225), (1100, 18678), (1132, 18150), (1210, 16980), (1320, 15565), (1415, 14520), (1452, 14150), (1650, 12452), (1698, 12100), (1815, 11320), (2200, 9339), (2264, 9075), (2420, 8490), (2830, 7260), (2904, 7075), (3025, 6792), (3113, 6600), (3300, 6226), (3396, 6050), (3630, 5660), (4245, 4840)]