19878081105

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{487}}^1\times {\mathrm{727}}^1$

素因数の和:1438

約数の個数: 64

約数和(自身を含む): 33764290560

約数和(自身を除く): 13886209455

約数列:

[1, 3, 5, 15, 19, 57, 95, 197, 285, 487, 591, 727, 985, 1461, 2181, 2435, 2955, 3635, 3743, 7305, 9253, 10905, 11229, 13813, 18715, 27759, 41439, 46265, 56145, 69065, 95939, 138795, 143219, 207195, 287817, 354049, 429657, 479695, 716095, 1062147, 1439085, 1770245, 1822841, 2148285, 2721161, 5310735, 5468523, 6726931, 8163483, 9114205, 13605805, 20180793, 27342615, 33634655, 40817415, 69747653, 100903965, 209242959, 348738265, 1046214795, 1325205407, 3975616221, 6626027035, 19878081105]

約数ペア:

[(1, 19878081105), (3, 6626027035), (5, 3975616221), (15, 1325205407), (19, 1046214795), (57, 348738265), (95, 209242959), (197, 100903965), (285, 69747653), (487, 40817415), (591, 33634655), (727, 27342615), (985, 20180793), (1461, 13605805), (2181, 9114205), (2435, 8163483), (2955, 6726931), (3635, 5468523), (3743, 5310735), (7305, 2721161), (9253, 2148285), (10905, 1822841), (11229, 1770245), (13813, 1439085), (18715, 1062147), (27759, 716095), (41439, 479695), (46265, 429657), (56145, 354049), (69065, 287817), (95939, 207195), (138795, 143219)]