21939120

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{1451}}^1$

素因数の和:1480

約数の個数: 160

約数和(自身を含む): 86423040

約数和(自身を除く): 64483920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1451, 1512, 1680, 1890, 2160, 2520, 2902, 3024, 3780, 4353, 5040, 5804, 7255, 7560, 8706, 10157, 11608, 13059, 14510, 15120, 17412, 20314, 21765, 23216, 26118, 29020, 30471, 34824, 39177, 40628, 43530, 50785, 52236, 58040, 60942, 65295, 69648, 78354, 81256, 87060, 91413, 101570, 104472, 116080, 121884, 130590, 152355, 156708, 162512, 174120, 182826, 195885, 203140, 208944, 243768, 261180, 274239, 304710, 313416, 348240, 365652, 391770, 406280, 457065, 487536, 522360, 548478, 609420, 626832, 731304, 783540, 812560, 914130, 1044720, 1096956, 1218840, 1371195, 1462608, 1567080, 1828260, 2193912, 2437680, 2742390, 3134160, 3656520, 4387824, 5484780, 7313040, 10969560, 21939120]

約数ペア:

[(1, 21939120), (2, 10969560), (3, 7313040), (4, 5484780), (5, 4387824), (6, 3656520), (7, 3134160), (8, 2742390), (9, 2437680), (10, 2193912), (12, 1828260), (14, 1567080), (15, 1462608), (16, 1371195), (18, 1218840), (20, 1096956), (21, 1044720), (24, 914130), (27, 812560), (28, 783540), (30, 731304), (35, 626832), (36, 609420), (40, 548478), (42, 522360), (45, 487536), (48, 457065), (54, 406280), (56, 391770), (60, 365652), (63, 348240), (70, 313416), (72, 304710), (80, 274239), (84, 261180), (90, 243768), (105, 208944), (108, 203140), (112, 195885), (120, 182826), (126, 174120), (135, 162512), (140, 156708), (144, 152355), (168, 130590), (180, 121884), (189, 116080), (210, 104472), (216, 101570), (240, 91413), (252, 87060), (270, 81256), (280, 78354), (315, 69648), (336, 65295), (360, 60942), (378, 58040), (420, 52236), (432, 50785), (504, 43530), (540, 40628), (560, 39177), (630, 34824), (720, 30471), (756, 29020), (840, 26118), (945, 23216), (1008, 21765), (1080, 20314), (1260, 17412), (1451, 15120), (1512, 14510), (1680, 13059), (1890, 11608), (2160, 10157), (2520, 8706), (2902, 7560), (3024, 7255), (3780, 5804), (4353, 5040)]