19980621864

素因数分解:

$2^3\times 3^4\times 7^1\times {\mathrm{4404899}}^1$

素因数の和:4404924

約数の個数: 80

約数和(自身を含む): 63959148000

約数和(自身を除く): 43978526136

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 63, 72, 81, 84, 108, 126, 162, 168, 189, 216, 252, 324, 378, 504, 567, 648, 756, 1134, 1512, 2268, 4536, 4404899, 8809798, 13214697, 17619596, 26429394, 30834293, 35239192, 39644091, 52858788, 61668586, 79288182, 92502879, 105717576, 118932273, 123337172, 158576364, 185005758, 237864546, 246674344, 277508637, 317152728, 356796819, 370011516, 475729092, 555017274, 713593638, 740023032, 832525911, 951458184, 1110034548, 1427187276, 1665051822, 2220069096, 2497577733, 2854374552, 3330103644, 4995155466, 6660207288, 9990310932, 19980621864]

約数ペア:

[(1, 19980621864), (2, 9990310932), (3, 6660207288), (4, 4995155466), (6, 3330103644), (7, 2854374552), (8, 2497577733), (9, 2220069096), (12, 1665051822), (14, 1427187276), (18, 1110034548), (21, 951458184), (24, 832525911), (27, 740023032), (28, 713593638), (36, 555017274), (42, 475729092), (54, 370011516), (56, 356796819), (63, 317152728), (72, 277508637), (81, 246674344), (84, 237864546), (108, 185005758), (126, 158576364), (162, 123337172), (168, 118932273), (189, 105717576), (216, 92502879), (252, 79288182), (324, 61668586), (378, 52858788), (504, 39644091), (567, 35239192), (648, 30834293), (756, 26429394), (1134, 17619596), (1512, 13214697), (2268, 8809798), (4536, 4404899)]