25707788680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{660529}}^1$

素因数の和:660686

約数の個数: 64

約数和(自身を含む): 66581424000

約数和(自身を除く): 40873635320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 556, 695, 973, 1112, 1390, 1946, 2780, 3892, 4865, 5560, 7784, 9730, 19460, 38920, 660529, 1321058, 2642116, 3302645, 4623703, 5284232, 6605290, 9247406, 13210580, 18494812, 23118515, 26421160, 36989624, 46237030, 91813531, 92474060, 183627062, 184948120, 367254124, 459067655, 642694717, 734508248, 918135310, 1285389434, 1836270620, 2570778868, 3213473585, 3672541240, 5141557736, 6426947170, 12853894340, 25707788680]

約数ペア:

[(1, 25707788680), (2, 12853894340), (4, 6426947170), (5, 5141557736), (7, 3672541240), (8, 3213473585), (10, 2570778868), (14, 1836270620), (20, 1285389434), (28, 918135310), (35, 734508248), (40, 642694717), (56, 459067655), (70, 367254124), (139, 184948120), (140, 183627062), (278, 92474060), (280, 91813531), (556, 46237030), (695, 36989624), (973, 26421160), (1112, 23118515), (1390, 18494812), (1946, 13210580), (2780, 9247406), (3892, 6605290), (4865, 5284232), (5560, 4623703), (7784, 3302645), (9730, 2642116), (19460, 1321058), (38920, 660529)]