20980056

素因数分解:

$2^3\times 3^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{173}}^1$

素因数の和:376

約数の個数: 64

約数和(自身を含む): 54789120

約数和(自身を除く): 33809064

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 31, 62, 93, 124, 163, 173, 186, 248, 326, 346, 372, 489, 519, 652, 692, 744, 978, 1038, 1304, 1384, 1956, 2076, 3912, 4152, 5053, 5363, 10106, 10726, 15159, 16089, 20212, 21452, 28199, 30318, 32178, 40424, 42904, 56398, 60636, 64356, 84597, 112796, 121272, 128712, 169194, 225592, 338388, 676776, 874169, 1748338, 2622507, 3496676, 5245014, 6993352, 10490028, 20980056]

約数ペア:

[(1, 20980056), (2, 10490028), (3, 6993352), (4, 5245014), (6, 3496676), (8, 2622507), (12, 1748338), (24, 874169), (31, 676776), (62, 338388), (93, 225592), (124, 169194), (163, 128712), (173, 121272), (186, 112796), (248, 84597), (326, 64356), (346, 60636), (372, 56398), (489, 42904), (519, 40424), (652, 32178), (692, 30318), (744, 28199), (978, 21452), (1038, 20212), (1304, 16089), (1384, 15159), (1956, 10726), (2076, 10106), (3912, 5363), (4152, 5053)]