20690810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:411

約数の個数: 64

約数和(自身を含む): 45895680

約数和(自身を除く): 25204870

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 47, 70, 94, 95, 133, 190, 235, 266, 329, 331, 470, 658, 662, 665, 893, 1330, 1645, 1655, 1786, 2317, 3290, 3310, 4465, 4634, 6251, 6289, 8930, 11585, 12502, 12578, 15557, 23170, 31114, 31255, 31445, 44023, 62510, 62890, 77785, 88046, 108899, 155570, 217798, 220115, 295583, 440230, 544495, 591166, 1088990, 1477915, 2069081, 2955830, 4138162, 10345405, 20690810]

約数ペア:

[(1, 20690810), (2, 10345405), (5, 4138162), (7, 2955830), (10, 2069081), (14, 1477915), (19, 1088990), (35, 591166), (38, 544495), (47, 440230), (70, 295583), (94, 220115), (95, 217798), (133, 155570), (190, 108899), (235, 88046), (266, 77785), (329, 62890), (331, 62510), (470, 44023), (658, 31445), (662, 31255), (665, 31114), (893, 23170), (1330, 15557), (1645, 12578), (1655, 12502), (1786, 11585), (2317, 8930), (3290, 6289), (3310, 6251), (4465, 4634)]