19885964

素因数分解:

$2^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1429}}^1$

素因数の和:1518

約数の個数: 36

約数和(自身を含む): 41081040

約数和(自身を除く): 21195076

約数列:

[1, 2, 4, 7, 14, 28, 49, 71, 98, 142, 196, 284, 497, 994, 1429, 1988, 2858, 3479, 5716, 6958, 10003, 13916, 20006, 40012, 70021, 101459, 140042, 202918, 280084, 405836, 710213, 1420426, 2840852, 4971491, 9942982, 19885964]

約数ペア:

[(1, 19885964), (2, 9942982), (4, 4971491), (7, 2840852), (14, 1420426), (28, 710213), (49, 405836), (71, 280084), (98, 202918), (142, 140042), (196, 101459), (284, 70021), (497, 40012), (994, 20006), (1429, 13916), (1988, 10003), (2858, 6958), (3479, 5716)]