19988436

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{3463}}^1$

素因数の和:3520

約数の個数: 48

約数和(自身を含む): 51599744

約数和(自身を除く): 31611308

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 37, 39, 52, 74, 78, 111, 148, 156, 222, 444, 481, 962, 1443, 1924, 2886, 3463, 5772, 6926, 10389, 13852, 20778, 41556, 45019, 90038, 128131, 135057, 180076, 256262, 270114, 384393, 512524, 540228, 768786, 1537572, 1665703, 3331406, 4997109, 6662812, 9994218, 19988436]

約数ペア:

[(1, 19988436), (2, 9994218), (3, 6662812), (4, 4997109), (6, 3331406), (12, 1665703), (13, 1537572), (26, 768786), (37, 540228), (39, 512524), (52, 384393), (74, 270114), (78, 256262), (111, 180076), (148, 135057), (156, 128131), (222, 90038), (444, 45019), (481, 41556), (962, 20778), (1443, 13852), (1924, 10389), (2886, 6926), (3463, 5772)]