81017818

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:275

約数の個数: 64

約数和(自身を含む): 154828800

約数和(自身を除く): 73810982

約数列:

[1, 2, 7, 14, 17, 31, 34, 62, 79, 119, 139, 158, 217, 238, 278, 434, 527, 553, 973, 1054, 1106, 1343, 1946, 2363, 2449, 2686, 3689, 4309, 4726, 4898, 7378, 8618, 9401, 10981, 16541, 17143, 18802, 21962, 30163, 33082, 34286, 41633, 60326, 73253, 76867, 83266, 146506, 153734, 186677, 291431, 340411, 373354, 512771, 582862, 680822, 1025542, 1306739, 2382877, 2613478, 4765754, 5786987, 11573974, 40508909, 81017818]

約数ペア:

[(1, 81017818), (2, 40508909), (7, 11573974), (14, 5786987), (17, 4765754), (31, 2613478), (34, 2382877), (62, 1306739), (79, 1025542), (119, 680822), (139, 582862), (158, 512771), (217, 373354), (238, 340411), (278, 291431), (434, 186677), (527, 153734), (553, 146506), (973, 83266), (1054, 76867), (1106, 73253), (1343, 60326), (1946, 41633), (2363, 34286), (2449, 33082), (2686, 30163), (3689, 21962), (4309, 18802), (4726, 17143), (4898, 16541), (7378, 10981), (8618, 9401)]