21139398

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:242

約数の個数: 96

約数和(自身を含む): 56609280

約数和(自身を除く): 35469882

約数列:

[1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 34, 42, 51, 63, 71, 102, 119, 126, 139, 142, 153, 213, 238, 278, 306, 357, 417, 426, 497, 639, 714, 834, 973, 994, 1071, 1207, 1251, 1278, 1491, 1946, 2142, 2363, 2414, 2502, 2919, 2982, 3621, 4473, 4726, 5838, 7089, 7242, 8449, 8757, 8946, 9869, 10863, 14178, 16541, 16898, 17514, 19738, 21267, 21726, 25347, 29607, 33082, 42534, 49623, 50694, 59214, 69083, 76041, 88821, 99246, 138166, 148869, 152082, 167773, 177642, 207249, 297738, 335546, 414498, 503319, 621747, 1006638, 1174411, 1243494, 1509957, 2348822, 3019914, 3523233, 7046466, 10569699, 21139398]

約数ペア:

[(1, 21139398), (2, 10569699), (3, 7046466), (6, 3523233), (7, 3019914), (9, 2348822), (14, 1509957), (17, 1243494), (18, 1174411), (21, 1006638), (34, 621747), (42, 503319), (51, 414498), (63, 335546), (71, 297738), (102, 207249), (119, 177642), (126, 167773), (139, 152082), (142, 148869), (153, 138166), (213, 99246), (238, 88821), (278, 76041), (306, 69083), (357, 59214), (417, 50694), (426, 49623), (497, 42534), (639, 33082), (714, 29607), (834, 25347), (973, 21726), (994, 21267), (1071, 19738), (1207, 17514), (1251, 16898), (1278, 16541), (1491, 14178), (1946, 10863), (2142, 9869), (2363, 8946), (2414, 8757), (2502, 8449), (2919, 7242), (2982, 7089), (3621, 5838), (4473, 4726)]