664890928

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{1187}}^1\times {\mathrm{2693}}^1$

素因数の和:3901

約数の個数: 40

約数和(自身を含む): 1389004848

約数和(自身を除く): 724113920

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 1187, 2374, 2693, 4748, 5386, 9496, 10772, 15431, 18992, 21544, 30862, 35009, 43088, 61724, 70018, 123448, 140036, 246896, 280072, 560144, 3196591, 6393182, 12786364, 25572728, 41555683, 51145456, 83111366, 166222732, 332445464, 664890928]

約数ペア:

[(1, 664890928), (2, 332445464), (4, 166222732), (8, 83111366), (13, 51145456), (16, 41555683), (26, 25572728), (52, 12786364), (104, 6393182), (208, 3196591), (1187, 560144), (2374, 280072), (2693, 246896), (4748, 140036), (5386, 123448), (9496, 70018), (10772, 61724), (15431, 43088), (18992, 35009), (21544, 30862)]