20639346

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{367}}^1$

素因数の和:495

約数の個数: 64

約数和(自身を含む): 51437568

約数和(自身を除く): 30798222

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 103, 182, 206, 273, 309, 367, 546, 618, 721, 734, 1101, 1339, 1442, 2163, 2202, 2569, 2678, 4017, 4326, 4771, 5138, 7707, 8034, 9373, 9542, 14313, 15414, 18746, 28119, 28626, 33397, 37801, 56238, 66794, 75602, 100191, 113403, 200382, 226806, 264607, 491413, 529214, 793821, 982826, 1474239, 1587642, 2948478, 3439891, 6879782, 10319673, 20639346]

約数ペア:

[(1, 20639346), (2, 10319673), (3, 6879782), (6, 3439891), (7, 2948478), (13, 1587642), (14, 1474239), (21, 982826), (26, 793821), (39, 529214), (42, 491413), (78, 264607), (91, 226806), (103, 200382), (182, 113403), (206, 100191), (273, 75602), (309, 66794), (367, 56238), (546, 37801), (618, 33397), (721, 28626), (734, 28119), (1101, 18746), (1339, 15414), (1442, 14313), (2163, 9542), (2202, 9373), (2569, 8034), (2678, 7707), (4017, 5138), (4326, 4771)]