21308595

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{971}}^1$

素因数の和:1016

約数の個数: 64

約数和(自身を含む): 44789760

約数和(自身を除く): 23481165

約数列:

[1, 3, 5, 7, 11, 15, 19, 21, 33, 35, 55, 57, 77, 95, 105, 133, 165, 209, 231, 285, 385, 399, 627, 665, 971, 1045, 1155, 1463, 1995, 2913, 3135, 4389, 4855, 6797, 7315, 10681, 14565, 18449, 20391, 21945, 32043, 33985, 53405, 55347, 74767, 92245, 101955, 129143, 160215, 202939, 224301, 276735, 373835, 387429, 608817, 645715, 1014695, 1121505, 1420573, 1937145, 3044085, 4261719, 7102865, 21308595]

約数ペア:

[(1, 21308595), (3, 7102865), (5, 4261719), (7, 3044085), (11, 1937145), (15, 1420573), (19, 1121505), (21, 1014695), (33, 645715), (35, 608817), (55, 387429), (57, 373835), (77, 276735), (95, 224301), (105, 202939), (133, 160215), (165, 129143), (209, 101955), (231, 92245), (285, 74767), (385, 55347), (399, 53405), (627, 33985), (665, 32043), (971, 21945), (1045, 20391), (1155, 18449), (1463, 14565), (1995, 10681), (2913, 7315), (3135, 6797), (4389, 4855)]