128007978

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{3413}}^1$

素因数の和:3491

約数の個数: 64

約数和(自身を含む): 314634240

約数和(自身を除く): 186626262

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 47, 57, 94, 114, 133, 141, 266, 282, 329, 399, 658, 798, 893, 987, 1786, 1974, 2679, 3413, 5358, 6251, 6826, 10239, 12502, 18753, 20478, 23891, 37506, 47782, 64847, 71673, 129694, 143346, 160411, 194541, 320822, 389082, 453929, 481233, 907858, 962466, 1122877, 1361787, 2245754, 2723574, 3047809, 3368631, 6095618, 6737262, 9143427, 18286854, 21334663, 42669326, 64003989, 128007978]

約数ペア:

[(1, 128007978), (2, 64003989), (3, 42669326), (6, 21334663), (7, 18286854), (14, 9143427), (19, 6737262), (21, 6095618), (38, 3368631), (42, 3047809), (47, 2723574), (57, 2245754), (94, 1361787), (114, 1122877), (133, 962466), (141, 907858), (266, 481233), (282, 453929), (329, 389082), (399, 320822), (658, 194541), (798, 160411), (893, 143346), (987, 129694), (1786, 71673), (1974, 64847), (2679, 47782), (3413, 37506), (5358, 23891), (6251, 20478), (6826, 18753), (10239, 12502)]