19987746

素因数分解:

$2^1\times 3^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{2621}}^1$

素因数の和:2698

約数の個数: 32

約数和(自身を含む): 42287616

約数和(自身を除く): 22299870

約数列:

[1, 2, 3, 6, 31, 41, 62, 82, 93, 123, 186, 246, 1271, 2542, 2621, 3813, 5242, 7626, 7863, 15726, 81251, 107461, 162502, 214922, 243753, 322383, 487506, 644766, 3331291, 6662582, 9993873, 19987746]

約数ペア:

[(1, 19987746), (2, 9993873), (3, 6662582), (6, 3331291), (31, 644766), (41, 487506), (62, 322383), (82, 243753), (93, 214922), (123, 162502), (186, 107461), (246, 81251), (1271, 15726), (2542, 7863), (2621, 7626), (3813, 5242)]