178018520

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{641}}^1$

素因数の和:836

約数の個数: 64

約数和(自身を含む): 411855840

約数和(自身を除く): 233837320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 131, 212, 262, 265, 424, 524, 530, 641, 655, 1048, 1060, 1282, 1310, 2120, 2564, 2620, 3205, 5128, 5240, 6410, 6943, 12820, 13886, 25640, 27772, 33973, 34715, 55544, 67946, 69430, 83971, 135892, 138860, 167942, 169865, 271784, 277720, 335884, 339730, 419855, 671768, 679460, 839710, 1358920, 1679420, 3358840, 4450463, 8900926, 17801852, 22252315, 35603704, 44504630, 89009260, 178018520]

約数ペア:

[(1, 178018520), (2, 89009260), (4, 44504630), (5, 35603704), (8, 22252315), (10, 17801852), (20, 8900926), (40, 4450463), (53, 3358840), (106, 1679420), (131, 1358920), (212, 839710), (262, 679460), (265, 671768), (424, 419855), (524, 339730), (530, 335884), (641, 277720), (655, 271784), (1048, 169865), (1060, 167942), (1282, 138860), (1310, 135892), (2120, 83971), (2564, 69430), (2620, 67946), (3205, 55544), (5128, 34715), (5240, 33973), (6410, 27772), (6943, 25640), (12820, 13886)]