21753765

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:304

約数の個数: 80

約数和(自身を含む): 44953920

約数和(自身を除く): 23200155

約数列:

[1, 3, 5, 9, 11, 15, 19, 27, 33, 45, 55, 57, 81, 95, 99, 135, 165, 171, 209, 257, 285, 297, 405, 495, 513, 627, 771, 855, 891, 1045, 1285, 1485, 1539, 1881, 2313, 2565, 2827, 3135, 3855, 4455, 4883, 5643, 6939, 7695, 8481, 9405, 11565, 14135, 14649, 16929, 20817, 24415, 25443, 28215, 34695, 42405, 43947, 53713, 73245, 76329, 84645, 104085, 127215, 131841, 161139, 219735, 228987, 268565, 381645, 395523, 483417, 659205, 805695, 1144935, 1450251, 1977615, 2417085, 4350753, 7251255, 21753765]

約数ペア:

[(1, 21753765), (3, 7251255), (5, 4350753), (9, 2417085), (11, 1977615), (15, 1450251), (19, 1144935), (27, 805695), (33, 659205), (45, 483417), (55, 395523), (57, 381645), (81, 268565), (95, 228987), (99, 219735), (135, 161139), (165, 131841), (171, 127215), (209, 104085), (257, 84645), (285, 76329), (297, 73245), (405, 53713), (495, 43947), (513, 42405), (627, 34695), (771, 28215), (855, 25443), (891, 24415), (1045, 20817), (1285, 16929), (1485, 14649), (1539, 14135), (1881, 11565), (2313, 9405), (2565, 8481), (2827, 7695), (3135, 6939), (3855, 5643), (4455, 4883)]