81291630

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{743}}^1$

素因数の和:1281

約数の個数: 64

約数和(自身を含む): 223699968

約数和(自身を除く): 142408338

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 521, 743, 1042, 1486, 1563, 2229, 2605, 3126, 3647, 3715, 4458, 5201, 5210, 7294, 7430, 7815, 10402, 10941, 11145, 15603, 15630, 18235, 21882, 22290, 26005, 31206, 36470, 52010, 54705, 78015, 109410, 156030, 387103, 774206, 1161309, 1935515, 2322618, 2709721, 3871030, 5419442, 5806545, 8129163, 11613090, 13548605, 16258326, 27097210, 40645815, 81291630]

約数ペア:

[(1, 81291630), (2, 40645815), (3, 27097210), (5, 16258326), (6, 13548605), (7, 11613090), (10, 8129163), (14, 5806545), (15, 5419442), (21, 3871030), (30, 2709721), (35, 2322618), (42, 1935515), (70, 1161309), (105, 774206), (210, 387103), (521, 156030), (743, 109410), (1042, 78015), (1486, 54705), (1563, 52010), (2229, 36470), (2605, 31206), (3126, 26005), (3647, 22290), (3715, 21882), (4458, 18235), (5201, 15630), (5210, 15603), (7294, 11145), (7430, 10941), (7815, 10402)]