20444697

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:239

約数の個数: 64

約数和(自身を含む): 38223360

約数和(自身を除く): 17778663

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 53, 63, 91, 117, 157, 159, 189, 273, 351, 371, 471, 477, 689, 819, 1099, 1113, 1413, 1431, 2041, 2067, 2457, 3297, 3339, 4239, 4823, 6123, 6201, 8321, 9891, 10017, 14287, 14469, 18369, 18603, 24963, 29673, 42861, 43407, 55107, 58247, 74889, 108173, 128583, 130221, 174741, 224667, 324519, 385749, 524223, 757211, 973557, 1572669, 2271633, 2920671, 6814899, 20444697]

約数ペア:

[(1, 20444697), (3, 6814899), (7, 2920671), (9, 2271633), (13, 1572669), (21, 973557), (27, 757211), (39, 524223), (53, 385749), (63, 324519), (91, 224667), (117, 174741), (157, 130221), (159, 128583), (189, 108173), (273, 74889), (351, 58247), (371, 55107), (471, 43407), (477, 42861), (689, 29673), (819, 24963), (1099, 18603), (1113, 18369), (1413, 14469), (1431, 14287), (2041, 10017), (2067, 9891), (2457, 8321), (3297, 6201), (3339, 6123), (4239, 4823)]