21035280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{659}}^1$

素因数の和:701

約数の個数: 160

約数和(自身を含む): 78566400

約数和(自身を除く): 57531120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 48, 56, 57, 60, 70, 76, 80, 84, 95, 105, 112, 114, 120, 133, 140, 152, 168, 190, 210, 228, 240, 266, 280, 285, 304, 336, 380, 399, 420, 456, 532, 560, 570, 659, 665, 760, 798, 840, 912, 1064, 1140, 1318, 1330, 1520, 1596, 1680, 1977, 1995, 2128, 2280, 2636, 2660, 3192, 3295, 3954, 3990, 4560, 4613, 5272, 5320, 6384, 6590, 7908, 7980, 9226, 9885, 10544, 10640, 12521, 13180, 13839, 15816, 15960, 18452, 19770, 23065, 25042, 26360, 27678, 31632, 31920, 36904, 37563, 39540, 46130, 50084, 52720, 55356, 62605, 69195, 73808, 75126, 79080, 87647, 92260, 100168, 110712, 125210, 138390, 150252, 158160, 175294, 184520, 187815, 200336, 221424, 250420, 262941, 276780, 300504, 350588, 369040, 375630, 438235, 500840, 525882, 553560, 601008, 701176, 751260, 876470, 1001680, 1051764, 1107120, 1314705, 1402352, 1502520, 1752940, 2103528, 2629410, 3005040, 3505880, 4207056, 5258820, 7011760, 10517640, 21035280]

約数ペア:

[(1, 21035280), (2, 10517640), (3, 7011760), (4, 5258820), (5, 4207056), (6, 3505880), (7, 3005040), (8, 2629410), (10, 2103528), (12, 1752940), (14, 1502520), (15, 1402352), (16, 1314705), (19, 1107120), (20, 1051764), (21, 1001680), (24, 876470), (28, 751260), (30, 701176), (35, 601008), (38, 553560), (40, 525882), (42, 500840), (48, 438235), (56, 375630), (57, 369040), (60, 350588), (70, 300504), (76, 276780), (80, 262941), (84, 250420), (95, 221424), (105, 200336), (112, 187815), (114, 184520), (120, 175294), (133, 158160), (140, 150252), (152, 138390), (168, 125210), (190, 110712), (210, 100168), (228, 92260), (240, 87647), (266, 79080), (280, 75126), (285, 73808), (304, 69195), (336, 62605), (380, 55356), (399, 52720), (420, 50084), (456, 46130), (532, 39540), (560, 37563), (570, 36904), (659, 31920), (665, 31632), (760, 27678), (798, 26360), (840, 25042), (912, 23065), (1064, 19770), (1140, 18452), (1318, 15960), (1330, 15816), (1520, 13839), (1596, 13180), (1680, 12521), (1977, 10640), (1995, 10544), (2128, 9885), (2280, 9226), (2636, 7980), (2660, 7908), (3192, 6590), (3295, 6384), (3954, 5320), (3990, 5272), (4560, 4613)]