215827480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{499}}^1\times {\mathrm{983}}^1$

素因数の和:1504

約数の個数: 64

約数和(自身を含む): 531360000

約数和(自身を除く): 315532520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 499, 983, 998, 1966, 1996, 2495, 3932, 3992, 4915, 4990, 5489, 7864, 9830, 9980, 10813, 10978, 19660, 19960, 21626, 21956, 27445, 39320, 43252, 43912, 54065, 54890, 86504, 108130, 109780, 216260, 219560, 432520, 490517, 981034, 1962068, 2452585, 3924136, 4905170, 5395687, 9810340, 10791374, 19620680, 21582748, 26978435, 43165496, 53956870, 107913740, 215827480]

約数ペア:

[(1, 215827480), (2, 107913740), (4, 53956870), (5, 43165496), (8, 26978435), (10, 21582748), (11, 19620680), (20, 10791374), (22, 9810340), (40, 5395687), (44, 4905170), (55, 3924136), (88, 2452585), (110, 1962068), (220, 981034), (440, 490517), (499, 432520), (983, 219560), (998, 216260), (1966, 109780), (1996, 108130), (2495, 86504), (3932, 54890), (3992, 54065), (4915, 43912), (4990, 43252), (5489, 39320), (7864, 27445), (9830, 21956), (9980, 21626), (10813, 19960), (10978, 19660)]