20787558

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^3\times {\mathrm{19}}^1\times {\mathrm{137}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 48487680

約数和(自身を除く): 27700122

約数列:

[1, 2, 3, 6, 11, 19, 22, 33, 38, 57, 66, 114, 121, 137, 209, 242, 274, 363, 411, 418, 627, 726, 822, 1254, 1331, 1507, 2299, 2603, 2662, 3014, 3993, 4521, 4598, 5206, 6897, 7809, 7986, 9042, 13794, 15618, 16577, 25289, 28633, 33154, 49731, 50578, 57266, 75867, 85899, 99462, 151734, 171798, 182347, 314963, 364694, 547041, 629926, 944889, 1094082, 1889778, 3464593, 6929186, 10393779, 20787558]

約数ペア:

[(1, 20787558), (2, 10393779), (3, 6929186), (6, 3464593), (11, 1889778), (19, 1094082), (22, 944889), (33, 629926), (38, 547041), (57, 364694), (66, 314963), (114, 182347), (121, 171798), (137, 151734), (209, 99462), (242, 85899), (274, 75867), (363, 57266), (411, 50578), (418, 49731), (627, 33154), (726, 28633), (822, 25289), (1254, 16577), (1331, 15618), (1507, 13794), (2299, 9042), (2603, 7986), (2662, 7809), (3014, 6897), (3993, 5206), (4521, 4598)]