19218990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1289}}^1$

素因数の和:1377

約数の個数: 64

約数和(自身を含む): 53498880

約数和(自身を除く): 34279890

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 71, 105, 142, 210, 213, 355, 426, 497, 710, 994, 1065, 1289, 1491, 2130, 2485, 2578, 2982, 3867, 4970, 6445, 7455, 7734, 9023, 12890, 14910, 18046, 19335, 27069, 38670, 45115, 54138, 90230, 91519, 135345, 183038, 270690, 274557, 457595, 549114, 640633, 915190, 1281266, 1372785, 1921899, 2745570, 3203165, 3843798, 6406330, 9609495, 19218990]

約数ペア:

[(1, 19218990), (2, 9609495), (3, 6406330), (5, 3843798), (6, 3203165), (7, 2745570), (10, 1921899), (14, 1372785), (15, 1281266), (21, 915190), (30, 640633), (35, 549114), (42, 457595), (70, 274557), (71, 270690), (105, 183038), (142, 135345), (210, 91519), (213, 90230), (355, 54138), (426, 45115), (497, 38670), (710, 27069), (994, 19335), (1065, 18046), (1289, 14910), (1491, 12890), (2130, 9023), (2485, 7734), (2578, 7455), (2982, 6445), (3867, 4970)]