19977926

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:248

約数の個数: 32

約数和(自身を含む): 32387040

約数和(自身を除く): 12409114

約数列:

[1, 2, 29, 53, 58, 67, 97, 106, 134, 194, 1537, 1943, 2813, 3074, 3551, 3886, 5141, 5626, 6499, 7102, 10282, 12998, 102979, 149089, 188471, 205958, 298178, 344447, 376942, 688894, 9988963, 19977926]

約数ペア:

[(1, 19977926), (2, 9988963), (29, 688894), (53, 376942), (58, 344447), (67, 298178), (97, 205958), (106, 188471), (134, 149089), (194, 102979), (1537, 12998), (1943, 10282), (2813, 7102), (3074, 6499), (3551, 5626), (3886, 5141)]