20287170

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{523}}^1$

素因数の和:967

約数の個数: 48

約数和(自身を含む): 52970112

約数和(自身を除く): 32682942

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 431, 523, 862, 1046, 1293, 1569, 2155, 2586, 2615, 3138, 3879, 4310, 4707, 5230, 6465, 7758, 7845, 9414, 12930, 15690, 19395, 23535, 38790, 47070, 225413, 450826, 676239, 1127065, 1352478, 2028717, 2254130, 3381195, 4057434, 6762390, 10143585, 20287170]

約数ペア:

[(1, 20287170), (2, 10143585), (3, 6762390), (5, 4057434), (6, 3381195), (9, 2254130), (10, 2028717), (15, 1352478), (18, 1127065), (30, 676239), (45, 450826), (90, 225413), (431, 47070), (523, 38790), (862, 23535), (1046, 19395), (1293, 15690), (1569, 12930), (2155, 9414), (2586, 7845), (2615, 7758), (3138, 6465), (3879, 5230), (4310, 4707)]