19959784

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:242

約数の個数: 64

約数和(自身を含む): 42900480

約数和(自身を除く): 22940696

約数列:

[1, 2, 4, 8, 13, 26, 31, 41, 52, 62, 82, 104, 124, 151, 164, 248, 302, 328, 403, 533, 604, 806, 1066, 1208, 1271, 1612, 1963, 2132, 2542, 3224, 3926, 4264, 4681, 5084, 6191, 7852, 9362, 10168, 12382, 15704, 16523, 18724, 24764, 33046, 37448, 49528, 60853, 66092, 80483, 121706, 132184, 160966, 191921, 243412, 321932, 383842, 486824, 643864, 767684, 1535368, 2494973, 4989946, 9979892, 19959784]

約数ペア:

[(1, 19959784), (2, 9979892), (4, 4989946), (8, 2494973), (13, 1535368), (26, 767684), (31, 643864), (41, 486824), (52, 383842), (62, 321932), (82, 243412), (104, 191921), (124, 160966), (151, 132184), (164, 121706), (248, 80483), (302, 66092), (328, 60853), (403, 49528), (533, 37448), (604, 33046), (806, 24764), (1066, 18724), (1208, 16523), (1271, 15704), (1612, 12382), (1963, 10168), (2132, 9362), (2542, 7852), (3224, 6191), (3926, 5084), (4264, 4681)]