20914575

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{251}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 38247552

約数和(自身を除く): 17332977

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 101, 165, 251, 275, 303, 505, 753, 825, 1111, 1255, 1515, 2525, 2761, 3333, 3765, 5555, 6275, 7575, 8283, 13805, 16665, 18825, 25351, 27775, 41415, 69025, 76053, 83325, 126755, 207075, 278861, 380265, 633775, 836583, 1394305, 1901325, 4182915, 6971525, 20914575]

約数ペア:

[(1, 20914575), (3, 6971525), (5, 4182915), (11, 1901325), (15, 1394305), (25, 836583), (33, 633775), (55, 380265), (75, 278861), (101, 207075), (165, 126755), (251, 83325), (275, 76053), (303, 69025), (505, 41415), (753, 27775), (825, 25351), (1111, 18825), (1255, 16665), (1515, 13805), (2525, 8283), (2761, 7575), (3333, 6275), (3765, 5555)]