1288397720

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{659}}^1\times {\mathrm{1321}}^1$

素因数の和:2028

約数の個数: 64

約数和(自身を含む): 2984018400

約数和(自身を除く): 1695620680

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 659, 740, 1318, 1321, 1480, 2636, 2642, 3295, 5272, 5284, 6590, 6605, 10568, 13180, 13210, 24383, 26360, 26420, 48766, 48877, 52840, 97532, 97754, 121915, 195064, 195508, 243830, 244385, 391016, 487660, 488770, 870539, 975320, 977540, 1741078, 1955080, 3482156, 4352695, 6964312, 8705390, 17410780, 32209943, 34821560, 64419886, 128839772, 161049715, 257679544, 322099430, 644198860, 1288397720]

約数ペア:

[(1, 1288397720), (2, 644198860), (4, 322099430), (5, 257679544), (8, 161049715), (10, 128839772), (20, 64419886), (37, 34821560), (40, 32209943), (74, 17410780), (148, 8705390), (185, 6964312), (296, 4352695), (370, 3482156), (659, 1955080), (740, 1741078), (1318, 977540), (1321, 975320), (1480, 870539), (2636, 488770), (2642, 487660), (3295, 391016), (5272, 244385), (5284, 243830), (6590, 195508), (6605, 195064), (10568, 121915), (13180, 97754), (13210, 97532), (24383, 52840), (26360, 48877), (26420, 48766)]