19894979.000000000

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{2389}}^1$

素因数の和:2537

約数の個数: 72

約数和(自身を含む): 488248320

約数和(自身を除く): 309847356

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 127, 147, 196, 254, 294, 381, 508, 588, 762, 889, 1524, 1778, 2389, 2667, 3556, 4778, 5334, 6223, 7167, 9556, 10668, 12446, 14334, 16723, 18669, 24892, 28668, 33446, 37338, 50169, 66892, 74676, 100338, 117061, 200676, 234122, 303403, 351183, 468244, 606806, 702366, 910209, 1213612, 1404732, 1820418, 2123821, 3640836, 4247642, 6371463, 8495284, 12742926, 14866747, 25485852, 29733494, 44600241, 59466988, 89200482, 178400964]

約数ペア:

[(1, 178400964), (2, 89200482), (3, 59466988), (4, 44600241), (6, 29733494), (7, 25485852), (12, 14866747), (14, 12742926), (21, 8495284), (28, 6371463), (42, 4247642), (49, 3640836), (84, 2123821), (98, 1820418), (127, 1404732), (147, 1213612), (196, 910209), (254, 702366), (294, 606806), (381, 468244), (508, 351183), (588, 303403), (762, 234122), (889, 200676), (1524, 117061), (1778, 100338), (2389, 74676), (2667, 66892), (3556, 50169), (4778, 37338), (5334, 33446), (6223, 28668), (7167, 24892), (9556, 18669), (10668, 16723), (12446, 14334)]