21793653

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 37604736

約数和(自身を除く): 15811083

約数列:

[1, 3, 7, 9, 21, 53, 61, 63, 107, 159, 183, 321, 371, 427, 477, 549, 749, 963, 1113, 1281, 2247, 3233, 3339, 3843, 5671, 6527, 6741, 9699, 17013, 19581, 22631, 29097, 39697, 45689, 51039, 58743, 67893, 119091, 137067, 203679, 345931, 357273, 411201, 1037793, 2421517, 3113379, 7264551, 21793653]

約数ペア:

[(1, 21793653), (3, 7264551), (7, 3113379), (9, 2421517), (21, 1037793), (53, 411201), (61, 357273), (63, 345931), (107, 203679), (159, 137067), (183, 119091), (321, 67893), (371, 58743), (427, 51039), (477, 45689), (549, 39697), (749, 29097), (963, 22631), (1113, 19581), (1281, 17013), (2247, 9699), (3233, 6741), (3339, 6527), (3843, 5671)]