320480680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{16657}}^1$

素因数の和:16718

約数の個数: 64

約数和(自身を含む): 797585040

約数和(自身を除く): 477104360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 37, 40, 52, 65, 74, 104, 130, 148, 185, 260, 296, 370, 481, 520, 740, 962, 1480, 1924, 2405, 3848, 4810, 9620, 16657, 19240, 33314, 66628, 83285, 133256, 166570, 216541, 333140, 433082, 616309, 666280, 866164, 1082705, 1232618, 1732328, 2165410, 2465236, 3081545, 4330820, 4930472, 6163090, 8012017, 8661640, 12326180, 16024034, 24652360, 32048068, 40060085, 64096136, 80120170, 160240340, 320480680]

約数ペア:

[(1, 320480680), (2, 160240340), (4, 80120170), (5, 64096136), (8, 40060085), (10, 32048068), (13, 24652360), (20, 16024034), (26, 12326180), (37, 8661640), (40, 8012017), (52, 6163090), (65, 4930472), (74, 4330820), (104, 3081545), (130, 2465236), (148, 2165410), (185, 1732328), (260, 1232618), (296, 1082705), (370, 866164), (481, 666280), (520, 616309), (740, 433082), (962, 333140), (1480, 216541), (1924, 166570), (2405, 133256), (3848, 83285), (4810, 66628), (9620, 33314), (16657, 19240)]