78990890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{2309}}^1$

素因数の和:2638

約数の個数: 32

約数和(自身を含む): 155675520

約数和(自身を除く): 76684630

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 311, 622, 1555, 2309, 3110, 3421, 4618, 6842, 11545, 17105, 23090, 25399, 34210, 50798, 126995, 253990, 718099, 1436198, 3590495, 7180990, 7899089, 15798178, 39495445, 78990890]

約数ペア:

[(1, 78990890), (2, 39495445), (5, 15798178), (10, 7899089), (11, 7180990), (22, 3590495), (55, 1436198), (110, 718099), (311, 253990), (622, 126995), (1555, 50798), (2309, 34210), (3110, 25399), (3421, 23090), (4618, 17105), (6842, 11545)]