21864535

素因数分解:

$5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:117

約数の個数: 64

約数和(自身を含む): 35712000

約数和(自身を除く): 13847465

約数列:

[1, 5, 7, 11, 19, 35, 49, 55, 61, 77, 95, 133, 209, 245, 305, 343, 385, 427, 539, 665, 671, 931, 1045, 1159, 1463, 1715, 2135, 2695, 2989, 3355, 3773, 4655, 4697, 5795, 6517, 7315, 8113, 10241, 12749, 14945, 18865, 20923, 23485, 32585, 32879, 40565, 51205, 56791, 63745, 71687, 89243, 104615, 164395, 230153, 283955, 358435, 397537, 446215, 624701, 1150765, 1987685, 3123505, 4372907, 21864535]

約数ペア:

[(1, 21864535), (5, 4372907), (7, 3123505), (11, 1987685), (19, 1150765), (35, 624701), (49, 446215), (55, 397537), (61, 358435), (77, 283955), (95, 230153), (133, 164395), (209, 104615), (245, 89243), (305, 71687), (343, 63745), (385, 56791), (427, 51205), (539, 40565), (665, 32879), (671, 32585), (931, 23485), (1045, 20923), (1159, 18865), (1463, 14945), (1715, 12749), (2135, 10241), (2695, 8113), (2989, 7315), (3355, 6517), (3773, 5795), (4655, 4697)]