21311730

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:157

約数の個数: 144

約数和(自身を含む): 64733760

約数和(自身を除く): 43422030

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 19, 22, 30, 33, 38, 45, 55, 57, 66, 90, 95, 99, 103, 110, 114, 121, 165, 171, 190, 198, 206, 209, 242, 285, 309, 330, 342, 363, 418, 495, 515, 570, 605, 618, 627, 726, 855, 927, 990, 1030, 1045, 1089, 1133, 1210, 1254, 1545, 1710, 1815, 1854, 1881, 1957, 2090, 2178, 2266, 2299, 3090, 3135, 3399, 3630, 3762, 3914, 4598, 4635, 5445, 5665, 5871, 6270, 6798, 6897, 9270, 9405, 9785, 10197, 10890, 11330, 11495, 11742, 12463, 13794, 16995, 17613, 18810, 19570, 20394, 20691, 21527, 22990, 24926, 29355, 33990, 34485, 35226, 37389, 41382, 43054, 50985, 58710, 62315, 64581, 68970, 74778, 88065, 101970, 103455, 107635, 112167, 124630, 129162, 176130, 186945, 193743, 206910, 215270, 224334, 236797, 322905, 373890, 387486, 473594, 560835, 645810, 710391, 968715, 1121670, 1183985, 1420782, 1937430, 2131173, 2367970, 3551955, 4262346, 7103910, 10655865, 21311730]

約数ペア:

[(1, 21311730), (2, 10655865), (3, 7103910), (5, 4262346), (6, 3551955), (9, 2367970), (10, 2131173), (11, 1937430), (15, 1420782), (18, 1183985), (19, 1121670), (22, 968715), (30, 710391), (33, 645810), (38, 560835), (45, 473594), (55, 387486), (57, 373890), (66, 322905), (90, 236797), (95, 224334), (99, 215270), (103, 206910), (110, 193743), (114, 186945), (121, 176130), (165, 129162), (171, 124630), (190, 112167), (198, 107635), (206, 103455), (209, 101970), (242, 88065), (285, 74778), (309, 68970), (330, 64581), (342, 62315), (363, 58710), (418, 50985), (495, 43054), (515, 41382), (570, 37389), (605, 35226), (618, 34485), (627, 33990), (726, 29355), (855, 24926), (927, 22990), (990, 21527), (1030, 20691), (1045, 20394), (1089, 19570), (1133, 18810), (1210, 17613), (1254, 16995), (1545, 13794), (1710, 12463), (1815, 11742), (1854, 11495), (1881, 11330), (1957, 10890), (2090, 10197), (2178, 9785), (2266, 9405), (2299, 9270), (3090, 6897), (3135, 6798), (3399, 6270), (3630, 5871), (3762, 5665), (3914, 5445), (4598, 4635)]