19850620

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 43309728

約数和(自身を除く): 23459108

約数列:

[1, 2, 4, 5, 10, 20, 53, 61, 106, 122, 212, 244, 265, 305, 307, 530, 610, 614, 1060, 1220, 1228, 1535, 3070, 3233, 6140, 6466, 12932, 16165, 16271, 18727, 32330, 32542, 37454, 64660, 65084, 74908, 81355, 93635, 162710, 187270, 325420, 374540, 992531, 1985062, 3970124, 4962655, 9925310, 19850620]

約数ペア:

[(1, 19850620), (2, 9925310), (4, 4962655), (5, 3970124), (10, 1985062), (20, 992531), (53, 374540), (61, 325420), (106, 187270), (122, 162710), (212, 93635), (244, 81355), (265, 74908), (305, 65084), (307, 64660), (530, 37454), (610, 32542), (614, 32330), (1060, 18727), (1220, 16271), (1228, 16165), (1535, 12932), (3070, 6466), (3233, 6140)]