18979038

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{367}}^1$

素因数の和:418

約数の個数: 72

約数和(自身を含む): 47275488

約数和(自身を除く): 28296450

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 78, 102, 117, 153, 169, 221, 234, 306, 338, 367, 442, 507, 663, 734, 1014, 1101, 1326, 1521, 1989, 2202, 2873, 3042, 3303, 3978, 4771, 5746, 6239, 6606, 8619, 9542, 12478, 14313, 17238, 18717, 25857, 28626, 37434, 42939, 51714, 56151, 62023, 81107, 85878, 112302, 124046, 162214, 186069, 243321, 372138, 486642, 558207, 729963, 1054391, 1116414, 1459926, 2108782, 3163173, 6326346, 9489519, 18979038]

約数ペア:

[(1, 18979038), (2, 9489519), (3, 6326346), (6, 3163173), (9, 2108782), (13, 1459926), (17, 1116414), (18, 1054391), (26, 729963), (34, 558207), (39, 486642), (51, 372138), (78, 243321), (102, 186069), (117, 162214), (153, 124046), (169, 112302), (221, 85878), (234, 81107), (306, 62023), (338, 56151), (367, 51714), (442, 42939), (507, 37434), (663, 28626), (734, 25857), (1014, 18717), (1101, 17238), (1326, 14313), (1521, 12478), (1989, 9542), (2202, 8619), (2873, 6606), (3042, 6239), (3303, 5746), (3978, 4771)]