21355845

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:314

約数の個数: 64

約数和(自身を含む): 42024960

約数和(自身を除く): 20669115

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 37, 69, 105, 111, 115, 161, 185, 239, 259, 345, 483, 555, 717, 777, 805, 851, 1195, 1295, 1673, 2415, 2553, 3585, 3885, 4255, 5019, 5497, 5957, 8365, 8843, 12765, 16491, 17871, 25095, 26529, 27485, 29785, 38479, 44215, 61901, 82455, 89355, 115437, 132645, 185703, 192395, 203389, 309505, 577185, 610167, 928515, 1016945, 1423723, 3050835, 4271169, 7118615, 21355845]

約数ペア:

[(1, 21355845), (3, 7118615), (5, 4271169), (7, 3050835), (15, 1423723), (21, 1016945), (23, 928515), (35, 610167), (37, 577185), (69, 309505), (105, 203389), (111, 192395), (115, 185703), (161, 132645), (185, 115437), (239, 89355), (259, 82455), (345, 61901), (483, 44215), (555, 38479), (717, 29785), (777, 27485), (805, 26529), (851, 25095), (1195, 17871), (1295, 16491), (1673, 12765), (2415, 8843), (2553, 8365), (3585, 5957), (3885, 5497), (4255, 5019)]