991515

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:112

約数の個数: 48

約数和(自身を含む): 1969920

約数和(自身を除く): 978405

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 71, 95, 105, 133, 147, 213, 245, 285, 355, 399, 497, 665, 735, 931, 1065, 1349, 1491, 1995, 2485, 2793, 3479, 4047, 4655, 6745, 7455, 9443, 10437, 13965, 17395, 20235, 28329, 47215, 52185, 66101, 141645, 198303, 330505, 991515]

約数ペア:

[(1, 991515), (3, 330505), (5, 198303), (7, 141645), (15, 66101), (19, 52185), (21, 47215), (35, 28329), (49, 20235), (57, 17395), (71, 13965), (95, 10437), (105, 9443), (133, 7455), (147, 6745), (213, 4655), (245, 4047), (285, 3479), (355, 2793), (399, 2485), (497, 1995), (665, 1491), (735, 1349), (931, 1065)]