20798778

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3463}}^1$

素因数の和:3499

約数の個数: 64

約数和(自身を含む): 55867392

約数和(自身を除く): 35068614

約数列:

[1, 2, 3, 6, 7, 11, 13, 14, 21, 22, 26, 33, 39, 42, 66, 77, 78, 91, 143, 154, 182, 231, 273, 286, 429, 462, 546, 858, 1001, 2002, 3003, 3463, 6006, 6926, 10389, 20778, 24241, 38093, 45019, 48482, 72723, 76186, 90038, 114279, 135057, 145446, 228558, 266651, 270114, 315133, 495209, 533302, 630266, 799953, 945399, 990418, 1485627, 1599906, 1890798, 2971254, 3466463, 6932926, 10399389, 20798778]

約数ペア:

[(1, 20798778), (2, 10399389), (3, 6932926), (6, 3466463), (7, 2971254), (11, 1890798), (13, 1599906), (14, 1485627), (21, 990418), (22, 945399), (26, 799953), (33, 630266), (39, 533302), (42, 495209), (66, 315133), (77, 270114), (78, 266651), (91, 228558), (143, 145446), (154, 135057), (182, 114279), (231, 90038), (273, 76186), (286, 72723), (429, 48482), (462, 45019), (546, 38093), (858, 24241), (1001, 20778), (2002, 10389), (3003, 6926), (3463, 6006)]