64913920

素因数分解:

$2^9\times 5^1\times {\mathrm{25357}}^1$

素因数の和:25380

約数の個数: 40

約数和(自身を含む): 155647404

約数和(自身を除く): 90733484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 25357, 50714, 101428, 126785, 202856, 253570, 405712, 507140, 811424, 1014280, 1622848, 2028560, 3245696, 4057120, 6491392, 8114240, 12982784, 16228480, 32456960, 64913920]

約数ペア:

[(1, 64913920), (2, 32456960), (4, 16228480), (5, 12982784), (8, 8114240), (10, 6491392), (16, 4057120), (20, 3245696), (32, 2028560), (40, 1622848), (64, 1014280), (80, 811424), (128, 507140), (160, 405712), (256, 253570), (320, 202856), (512, 126785), (640, 101428), (1280, 50714), (2560, 25357)]