21030156

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4909}}^1$

素因数の和:4943

約数の個数: 72

約数和(自身を含む): 64340640

約数和(自身を除く): 43310484

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 28, 34, 36, 42, 51, 63, 68, 84, 102, 119, 126, 153, 204, 238, 252, 306, 357, 476, 612, 714, 1071, 1428, 2142, 4284, 4909, 9818, 14727, 19636, 29454, 34363, 44181, 58908, 68726, 83453, 88362, 103089, 137452, 166906, 176724, 206178, 250359, 309267, 333812, 412356, 500718, 584171, 618534, 751077, 1001436, 1168342, 1237068, 1502154, 1752513, 2336684, 3004308, 3505026, 5257539, 7010052, 10515078, 21030156]

約数ペア:

[(1, 21030156), (2, 10515078), (3, 7010052), (4, 5257539), (6, 3505026), (7, 3004308), (9, 2336684), (12, 1752513), (14, 1502154), (17, 1237068), (18, 1168342), (21, 1001436), (28, 751077), (34, 618534), (36, 584171), (42, 500718), (51, 412356), (63, 333812), (68, 309267), (84, 250359), (102, 206178), (119, 176724), (126, 166906), (153, 137452), (204, 103089), (238, 88362), (252, 83453), (306, 68726), (357, 58908), (476, 44181), (612, 34363), (714, 29454), (1071, 19636), (1428, 14727), (2142, 9818), (4284, 4909)]