18788490

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{9941}}^1$

素因数の和:9964

約数の個数: 64

約数和(自身を含む): 57265920

約数和(自身を除く): 38477430

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 9941, 19882, 29823, 49705, 59646, 69587, 89469, 99410, 139174, 149115, 178938, 208761, 268407, 298230, 347935, 417522, 447345, 536814, 626283, 695870, 894690, 1043805, 1252566, 1342035, 1878849, 2087610, 2684070, 3131415, 3757698, 6262830, 9394245, 18788490]

約数ペア:

[(1, 18788490), (2, 9394245), (3, 6262830), (5, 3757698), (6, 3131415), (7, 2684070), (9, 2087610), (10, 1878849), (14, 1342035), (15, 1252566), (18, 1043805), (21, 894690), (27, 695870), (30, 626283), (35, 536814), (42, 447345), (45, 417522), (54, 347935), (63, 298230), (70, 268407), (90, 208761), (105, 178938), (126, 149115), (135, 139174), (189, 99410), (210, 89469), (270, 69587), (315, 59646), (378, 49705), (630, 29823), (945, 19882), (1890, 9941)]