20516760

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{157}}^1$

素因数の和:199

約数の個数: 192

約数和(自身を含む): 75650400

約数和(自身を除く): 55133640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 54, 55, 60, 66, 72, 88, 90, 99, 108, 110, 120, 121, 132, 135, 157, 165, 180, 198, 216, 220, 242, 264, 270, 297, 314, 330, 360, 363, 396, 440, 471, 484, 495, 540, 594, 605, 628, 660, 726, 785, 792, 942, 968, 990, 1080, 1089, 1188, 1210, 1256, 1320, 1413, 1452, 1485, 1570, 1727, 1815, 1884, 1980, 2178, 2355, 2376, 2420, 2826, 2904, 2970, 3140, 3267, 3454, 3630, 3768, 3960, 4239, 4356, 4710, 4840, 5181, 5445, 5652, 5940, 6280, 6534, 6908, 7065, 7260, 8478, 8635, 8712, 9420, 10362, 10890, 11304, 11880, 13068, 13816, 14130, 14520, 15543, 16335, 16956, 17270, 18840, 18997, 20724, 21195, 21780, 25905, 26136, 28260, 31086, 32670, 33912, 34540, 37994, 41448, 42390, 43560, 46629, 51810, 56520, 56991, 62172, 65340, 69080, 75988, 77715, 84780, 93258, 94985, 103620, 113982, 124344, 130680, 151976, 155430, 169560, 170973, 186516, 189970, 207240, 227964, 233145, 284955, 310860, 341946, 373032, 379940, 455928, 466290, 512919, 569910, 621720, 683892, 759880, 854865, 932580, 1025838, 1139820, 1367784, 1709730, 1865160, 2051676, 2279640, 2564595, 3419460, 4103352, 5129190, 6838920, 10258380, 20516760]

約数ペア:

[(1, 20516760), (2, 10258380), (3, 6838920), (4, 5129190), (5, 4103352), (6, 3419460), (8, 2564595), (9, 2279640), (10, 2051676), (11, 1865160), (12, 1709730), (15, 1367784), (18, 1139820), (20, 1025838), (22, 932580), (24, 854865), (27, 759880), (30, 683892), (33, 621720), (36, 569910), (40, 512919), (44, 466290), (45, 455928), (54, 379940), (55, 373032), (60, 341946), (66, 310860), (72, 284955), (88, 233145), (90, 227964), (99, 207240), (108, 189970), (110, 186516), (120, 170973), (121, 169560), (132, 155430), (135, 151976), (157, 130680), (165, 124344), (180, 113982), (198, 103620), (216, 94985), (220, 93258), (242, 84780), (264, 77715), (270, 75988), (297, 69080), (314, 65340), (330, 62172), (360, 56991), (363, 56520), (396, 51810), (440, 46629), (471, 43560), (484, 42390), (495, 41448), (540, 37994), (594, 34540), (605, 33912), (628, 32670), (660, 31086), (726, 28260), (785, 26136), (792, 25905), (942, 21780), (968, 21195), (990, 20724), (1080, 18997), (1089, 18840), (1188, 17270), (1210, 16956), (1256, 16335), (1320, 15543), (1413, 14520), (1452, 14130), (1485, 13816), (1570, 13068), (1727, 11880), (1815, 11304), (1884, 10890), (1980, 10362), (2178, 9420), (2355, 8712), (2376, 8635), (2420, 8478), (2826, 7260), (2904, 7065), (2970, 6908), (3140, 6534), (3267, 6280), (3454, 5940), (3630, 5652), (3768, 5445), (3960, 5181), (4239, 4840), (4356, 4710)]