19572980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{557}}^1$

素因数の和:824

約数の個数: 48

約数和(自身を含む): 47246976

約数和(自身を除く): 27673996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 251, 502, 557, 1004, 1114, 1255, 1757, 2228, 2510, 2785, 3514, 3899, 5020, 5570, 7028, 7798, 8785, 11140, 15596, 17570, 19495, 35140, 38990, 77980, 139807, 279614, 559228, 699035, 978649, 1398070, 1957298, 2796140, 3914596, 4893245, 9786490, 19572980]

約数ペア:

[(1, 19572980), (2, 9786490), (4, 4893245), (5, 3914596), (7, 2796140), (10, 1957298), (14, 1398070), (20, 978649), (28, 699035), (35, 559228), (70, 279614), (140, 139807), (251, 77980), (502, 38990), (557, 35140), (1004, 19495), (1114, 17570), (1255, 15596), (1757, 11140), (2228, 8785), (2510, 7798), (2785, 7028), (3514, 5570), (3899, 5020)]