1218702920

素因数分解:

$2^3\times 5^1\times {\mathrm{1867}}^1\times {\mathrm{16319}}^1$

素因数の和:18197

約数の個数: 32

約数和(自身を含む): 2743718400

約数和(自身を除く): 1525015480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1867, 3734, 7468, 9335, 14936, 16319, 18670, 32638, 37340, 65276, 74680, 81595, 130552, 163190, 326380, 652760, 30467573, 60935146, 121870292, 152337865, 243740584, 304675730, 609351460, 1218702920]

約数ペア:

[(1, 1218702920), (2, 609351460), (4, 304675730), (5, 243740584), (8, 152337865), (10, 121870292), (20, 60935146), (40, 30467573), (1867, 652760), (3734, 326380), (7468, 163190), (9335, 130552), (14936, 81595), (16319, 74680), (18670, 65276), (32638, 37340)]