161780920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{1109}}^1$

素因数の和:1648

約数の個数: 64

約数和(自身を含む): 417182400

約数和(自身を除く): 255401480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 521, 1042, 1109, 2084, 2218, 2605, 3647, 4168, 4436, 5210, 5545, 7294, 7763, 8872, 10420, 11090, 14588, 15526, 18235, 20840, 22180, 29176, 31052, 36470, 38815, 44360, 62104, 72940, 77630, 145880, 155260, 310520, 577789, 1155578, 2311156, 2888945, 4044523, 4622312, 5777890, 8089046, 11555780, 16178092, 20222615, 23111560, 32356184, 40445230, 80890460, 161780920]

約数ペア:

[(1, 161780920), (2, 80890460), (4, 40445230), (5, 32356184), (7, 23111560), (8, 20222615), (10, 16178092), (14, 11555780), (20, 8089046), (28, 5777890), (35, 4622312), (40, 4044523), (56, 2888945), (70, 2311156), (140, 1155578), (280, 577789), (521, 310520), (1042, 155260), (1109, 145880), (2084, 77630), (2218, 72940), (2605, 62104), (3647, 44360), (4168, 38815), (4436, 36470), (5210, 31052), (5545, 29176), (7294, 22180), (7763, 20840), (8872, 18235), (10420, 15526), (11090, 14588)]