21131188260

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{552883}}^1$

素因数の和:552922

約数の個数: 144

約数和(自身を含む): 74121840576

約数和(自身を除く): 52990652316

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 49, 52, 60, 65, 70, 78, 84, 91, 98, 105, 130, 140, 147, 156, 182, 195, 196, 210, 245, 260, 273, 294, 364, 390, 420, 455, 490, 546, 588, 637, 735, 780, 910, 980, 1092, 1274, 1365, 1470, 1820, 1911, 2548, 2730, 2940, 3185, 3822, 5460, 6370, 7644, 9555, 12740, 19110, 38220, 552883, 1105766, 1658649, 2211532, 2764415, 3317298, 3870181, 5528830, 6634596, 7187479, 7740362, 8293245, 11057660, 11610543, 14374958, 15480724, 16586490, 19350905, 21562437, 23221086, 27091267, 28749916, 33172980, 35937395, 38701810, 43124874, 46442172, 50312353, 54182534, 58052715, 71874790, 77403620, 81273801, 86249748, 100624706, 107812185, 108365068, 116105430, 135456335, 143749580, 150937059, 162547602, 201249412, 215624370, 232210860, 251561765, 270912670, 301874118, 325095204, 352186471, 406369005, 431248740, 503123530, 541825340, 603748236, 704372942, 754685295, 812738010, 1006247060, 1056559413, 1408745884, 1509370590, 1625476020, 1760932355, 2113118826, 3018741180, 3521864710, 4226237652, 5282797065, 7043729420, 10565594130, 21131188260]

約数ペア:

[(1, 21131188260), (2, 10565594130), (3, 7043729420), (4, 5282797065), (5, 4226237652), (6, 3521864710), (7, 3018741180), (10, 2113118826), (12, 1760932355), (13, 1625476020), (14, 1509370590), (15, 1408745884), (20, 1056559413), (21, 1006247060), (26, 812738010), (28, 754685295), (30, 704372942), (35, 603748236), (39, 541825340), (42, 503123530), (49, 431248740), (52, 406369005), (60, 352186471), (65, 325095204), (70, 301874118), (78, 270912670), (84, 251561765), (91, 232210860), (98, 215624370), (105, 201249412), (130, 162547602), (140, 150937059), (147, 143749580), (156, 135456335), (182, 116105430), (195, 108365068), (196, 107812185), (210, 100624706), (245, 86249748), (260, 81273801), (273, 77403620), (294, 71874790), (364, 58052715), (390, 54182534), (420, 50312353), (455, 46442172), (490, 43124874), (546, 38701810), (588, 35937395), (637, 33172980), (735, 28749916), (780, 27091267), (910, 23221086), (980, 21562437), (1092, 19350905), (1274, 16586490), (1365, 15480724), (1470, 14374958), (1820, 11610543), (1911, 11057660), (2548, 8293245), (2730, 7740362), (2940, 7187479), (3185, 6634596), (3822, 5528830), (5460, 3870181), (6370, 3317298), (7644, 2764415), (9555, 2211532), (12740, 1658649), (19110, 1105766), (38220, 552883)]