19995868

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{47}}^2\times {\mathrm{73}}^1$

素因数の和:202

約数の個数: 36

約数和(自身を含む): 37412032

約数和(自身を除く): 17416164

約数列:

[1, 2, 4, 31, 47, 62, 73, 94, 124, 146, 188, 292, 1457, 2209, 2263, 2914, 3431, 4418, 4526, 5828, 6862, 8836, 9052, 13724, 68479, 106361, 136958, 161257, 212722, 273916, 322514, 425444, 645028, 4998967, 9997934, 19995868]

約数ペア:

[(1, 19995868), (2, 9997934), (4, 4998967), (31, 645028), (47, 425444), (62, 322514), (73, 273916), (94, 212722), (124, 161257), (146, 136958), (188, 106361), (292, 68479), (1457, 13724), (2209, 9052), (2263, 8836), (2914, 6862), (3431, 5828), (4418, 4526)]