20165180700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:235

約数の個数: 864

約数和(自身を含む): 78654965760

約数和(自身を除く): 58489785060

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 19, 20, 21, 25, 28, 30, 31, 34, 35, 38, 42, 49, 50, 51, 57, 60, 62, 68, 70, 75, 76, 84, 85, 93, 95, 98, 100, 102, 105, 114, 119, 124, 133, 137, 140, 147, 150, 155, 170, 175, 186, 190, 196, 204, 210, 217, 228, 238, 245, 255, 266, 274, 285, 294, 300, 310, 323, 340, 350, 357, 372, 380, 399, 411, 420, 425, 434, 465, 475, 476, 490, 510, 525, 527, 532, 548, 570, 588, 589, 595, 620, 646, 651, 665, 685, 700, 714, 735, 775, 798, 822, 833, 850, 868, 930, 931, 950, 959, 969, 980, 1020, 1050, 1054, 1085, 1140, 1178, 1190, 1225, 1275, 1292, 1302, 1330, 1370, 1425, 1428, 1470, 1519, 1550, 1581, 1596, 1615, 1644, 1666, 1700, 1767, 1785, 1860, 1862, 1900, 1918, 1938, 1995, 2055, 2100, 2108, 2170, 2261, 2325, 2329, 2356, 2380, 2450, 2499, 2550, 2603, 2604, 2635, 2660, 2740, 2793, 2850, 2877, 2940, 2945, 2975, 3038, 3100, 3162, 3230, 3255, 3325, 3332, 3425, 3534, 3570, 3675, 3689, 3724, 3836, 3876, 3990, 4110, 4123, 4165, 4247, 4340, 4522, 4557, 4650, 4655, 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約数ペア:

[(1, 20165180700), (2, 10082590350), (3, 6721726900), (4, 5041295175), (5, 4033036140), (6, 3360863450), (7, 2880740100), (10, 2016518070), (12, 1680431725), (14, 1440370050), (15, 1344345380), (17, 1186187100), (19, 1061325300), (20, 1008259035), (21, 960246700), (25, 806607228), (28, 720185025), (30, 672172690), (31, 650489700), (34, 593093550), (35, 576148020), (38, 530662650), (42, 480123350), (49, 411534300), (50, 403303614), (51, 395395700), (57, 353775100), (60, 336086345), (62, 325244850), (68, 296546775), (70, 288074010), (75, 268869076), (76, 265331325), (84, 240061675), (85, 237237420), (93, 216829900), (95, 212265060), (98, 205767150), (100, 201651807), (102, 197697850), (105, 192049340), (114, 176887550), (119, 169455300), (124, 162622425), (133, 151617900), (137, 147191100), (140, 144037005), (147, 137178100), (150, 134434538), (155, 130097940), (170, 118618710), (175, 115229604), (186, 108414950), (190, 106132530), (196, 102883575), (204, 98848925), (210, 96024670), 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