20656472025

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{389561}}^1$

素因数の和:389682

約数の個数: 48

約数和(自身を含む): 39417441408

約数和(自身を除く): 18760969383

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 101, 105, 175, 303, 505, 525, 707, 1515, 2121, 2525, 3535, 7575, 10605, 17675, 53025, 389561, 1168683, 1947805, 2726927, 5843415, 8180781, 9739025, 13634635, 29217075, 39345661, 40903905, 68173175, 118036983, 196728305, 204519525, 275419627, 590184915, 826258881, 983641525, 1377098135, 2950924575, 4131294405, 6885490675, 20656472025]

約数ペア:

[(1, 20656472025), (3, 6885490675), (5, 4131294405), (7, 2950924575), (15, 1377098135), (21, 983641525), (25, 826258881), (35, 590184915), (75, 275419627), (101, 204519525), (105, 196728305), (175, 118036983), (303, 68173175), (505, 40903905), (525, 39345661), (707, 29217075), (1515, 13634635), (2121, 9739025), (2525, 8180781), (3535, 5843415), (7575, 2726927), (10605, 1947805), (17675, 1168683), (53025, 389561)]