30815960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{701}}^1$

素因数の和:876

約数の個数: 64

約数和(自身を含む): 79859520

約数和(自身を除く): 49043560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 157, 280, 314, 628, 701, 785, 1099, 1256, 1402, 1570, 2198, 2804, 3140, 3505, 4396, 4907, 5495, 5608, 6280, 7010, 8792, 9814, 10990, 14020, 19628, 21980, 24535, 28040, 39256, 43960, 49070, 98140, 110057, 196280, 220114, 440228, 550285, 770399, 880456, 1100570, 1540798, 2201140, 3081596, 3851995, 4402280, 6163192, 7703990, 15407980, 30815960]

約数ペア:

[(1, 30815960), (2, 15407980), (4, 7703990), (5, 6163192), (7, 4402280), (8, 3851995), (10, 3081596), (14, 2201140), (20, 1540798), (28, 1100570), (35, 880456), (40, 770399), (56, 550285), (70, 440228), (140, 220114), (157, 196280), (280, 110057), (314, 98140), (628, 49070), (701, 43960), (785, 39256), (1099, 28040), (1256, 24535), (1402, 21980), (1570, 19628), (2198, 14020), (2804, 10990), (3140, 9814), (3505, 8792), (4396, 7010), (4907, 6280), (5495, 5608)]