19858930

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:323

約数の個数: 64

約数和(自身を含む): 44593920

約数和(自身を除く): 24734990

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 139, 157, 182, 278, 314, 455, 695, 785, 910, 973, 1099, 1390, 1570, 1807, 1946, 2041, 2198, 3614, 4082, 4865, 5495, 9035, 9730, 10205, 10990, 12649, 14287, 18070, 20410, 21823, 25298, 28574, 43646, 63245, 71435, 109115, 126490, 142870, 152761, 218230, 283699, 305522, 567398, 763805, 1418495, 1527610, 1985893, 2836990, 3971786, 9929465, 19858930]

約数ペア:

[(1, 19858930), (2, 9929465), (5, 3971786), (7, 2836990), (10, 1985893), (13, 1527610), (14, 1418495), (26, 763805), (35, 567398), (65, 305522), (70, 283699), (91, 218230), (130, 152761), (139, 142870), (157, 126490), (182, 109115), (278, 71435), (314, 63245), (455, 43646), (695, 28574), (785, 25298), (910, 21823), (973, 20410), (1099, 18070), (1390, 14287), (1570, 12649), (1807, 10990), (1946, 10205), (2041, 9730), (2198, 9035), (3614, 5495), (4082, 4865)]